Model Builder: Problem Populating Attribute Fields in Tool

Question

I am still new to Model Builder but have learned some of the basics. I have been trying to add attribute fields and populate them. I am working with an exisitng tool (Strip Map Index Features; under Cartography Tools in ArcMap). Upon running the tool, there are several attributes that are generated and populated in the attributes table. I have successfully added four fields to the attribute table, however they are not being populated. They are populated as 0's. This is where my lack of understanding is causing me problems.

The four fields I've added:
SMAP_NAME
SMAP_NUM
SMAP_SCALE
SMAP_ANGLE

The Strip Map Index Features tool already generates some of these attributes in the table (Angle, PageNumber), so in the simplest of cases, it would just be a matter of assigning those same values to the attribute fields that I've created (i.e., SMAP_ANGLE would get the values in Angle and SMAP_NUM would get the values in PageNumber).THe next case would be that SMAP_SCALE and SMAP_NAME would be populated from the inpute values.

So overall, there are no major complicated calculations for these attribute fields to be populated. I'm just not sure how to populate these fields that I've created. Again, they appear in the attribute table but with 0's.

Any help on this matter would be greatly appreciated. If I could just get a better understanding of how to calculate one, then I'm pretty sure I could figure out the rest. I have attached screen shots below. Thanks in advance.

P.S.
THe tools that I used to add the fields are 'Add Field' tools under Data Management Tools -> Fields

[ATTACH=CONFIG]29202[/ATTACH] [ATTACH=CONFIG]29203[/ATTACH]

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JamariPowers · Answer

I think I have figured somehting out. It seems I'm making this harder than it is. I used the 'Output'  as my input table, set the Field Name to 'SMAP_NAME', and made the expression to "%Map Name%" (In reference to my model above).

When the tool is ran, the user actually fills in the map name. The attribute SMAP_NAME is now populated. Not sure how or why this all of a sudden works now, other than me making it harder than what it seems and your advice. Thanks for your help / Todd93

Anonymous User · Answer

Original User: todd93

You need to have a table included as the "Input Table". Then, the drop-down menu associated with "Field Name" will be populated with the fields of the Input Table.

JamariPowers · Answer

I see. When I select the input for my 'Calculate Field', there are no options to select from in the 'Field Name' list. Is this list supposed to be populated or can you type in any field name for it to work?