Pass a polygon to a geoprocessor, datatypes issue?

JamesHone1

I am trying to call a geoprocessor from WAB that will clip some tiffs and supply them to the user.

I am passing in a list of boolean and a polygon to clip to.

I am getting the polygon from the dawbox dijit as shown below.

postCreate<SPAN class="punctuation token">:</SPAN> <SPAN class="keyword token">function</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
			<SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">inherited</SPAN><SPAN class="punctuation token">(</SPAN>arguments<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
			
			<SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>drawBox<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setMap</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
			<SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>drawBox<SPAN class="punctuation token">.</SPAN>showClear <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
			<SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>drawBox<SPAN class="punctuation token">.</SPAN>keepOneGraphic <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
			<SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">own</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="token function">on</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">.</SPAN>drawBox<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'DrawEnd'</SPAN><SPAN class="punctuation token">,</SPAN> lang<SPAN class="punctuation token">.</SPAN><SPAN class="token function">hitch</SPAN><SPAN class="punctuation