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    <title>topic How does one implement a multi-field checkbox in new-style Python toolboxes? in Python Questions</title>
    <link>https://community.esri.com/t5/python-questions/how-does-one-implement-a-multi-field-checkbox-in/m-p/94155#M7351</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I'm trying to implement a new-style toolbox that allows me to introspect a feature and check which fields to draw data from. This was straightforward in the old-style toolboxes, something along the lines of:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;param0&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;arcpy&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;.&lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;Parameter&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;(&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;displayName&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Input Features"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;name&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"in_features"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;datatype&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"GPFeatureLayer"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;parameterType&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Required"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;direction&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Input"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;)&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;However, when I try that in a new toolbox, the control won't display that parameter..... any help would be appreciated.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN class="p" style="-webkit-font-smoothing: antialiased; color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; white-space: pre; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Thu, 02 Jun 2016 18:51:15 GMT</pubDate>
    <dc:creator>MarkosKapes</dc:creator>
    <dc:date>2016-06-02T18:51:15Z</dc:date>
    <item>
      <title>How does one implement a multi-field checkbox in new-style Python toolboxes?</title>
      <link>https://community.esri.com/t5/python-questions/how-does-one-implement-a-multi-field-checkbox-in/m-p/94155#M7351</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I'm trying to implement a new-style toolbox that allows me to introspect a feature and check which fields to draw data from. This was straightforward in the old-style toolboxes, something along the lines of:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;param0&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;arcpy&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;.&lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;Parameter&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;(&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;displayName&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Input Features"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;name&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"in_features"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;datatype&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"GPFeatureLayer"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;parameterType&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Required"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;,&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;SPAN class="n" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;direction&lt;/SPAN&gt;&lt;SPAN class="o" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;=&lt;/SPAN&gt;&lt;SPAN class="s" style="color: #a31515; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;"Input"&lt;/SPAN&gt;&lt;SPAN class="p" style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;)&lt;/SPAN&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; background-color: #fafafa;"&gt;However, when I try that in a new toolbox, the control won't display that parameter..... any help would be appreciated.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN class="p" style="-webkit-font-smoothing: antialiased; color: #4d4d4d; font-family: Consolas, 'Andale Mono', 'Lucida Console', Monaco, 'Courier New', Courier, monospace; font-size: 12px; white-space: pre; background-color: #fafafa;"&gt; &lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 02 Jun 2016 18:51:15 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/how-does-one-implement-a-multi-field-checkbox-in/m-p/94155#M7351</guid>
      <dc:creator>MarkosKapes</dc:creator>
      <dc:date>2016-06-02T18:51:15Z</dc:date>
    </item>
    <item>
      <title>Re: How does one implement a multi-field checkbox in new-style Python toolboxes?</title>
      <link>https://community.esri.com/t5/python-questions/how-does-one-implement-a-multi-field-checkbox-in/m-p/94156#M7352</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;The information and examples is limited showing only how to use it in tool validation&lt;/P&gt;&lt;P&gt;&lt;A href="https://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-classes/parameter.htm" title="https://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-classes/parameter.htm"&gt;Parameter—Help | ArcGIS for Desktop&lt;/A&gt;&amp;nbsp; due note that the valueastext parameter is only for python toolboxes,&amp;nbsp; I would begin to see if your accepted defaults behave differently in conventional vs python toolboxes&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 02 Jun 2016 21:30:32 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/how-does-one-implement-a-multi-field-checkbox-in/m-p/94156#M7352</guid>
      <dc:creator>DanPatterson_Retired</dc:creator>
      <dc:date>2016-06-02T21:30:32Z</dc:date>
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