AutoCAD Inventor :: Using ILogic And Parameters In IDW File Text Box

I am trying to enter some material ordering info into an external spreadsheet, and have that info reflected in a text box within an idw drawing file.

My method is as follows:

Obtain a numerical value (250) from an external Excel spreadsheet (sample.xlsx).Assign this value to a parameter (abc) in an idw file (Materials Ordering.idw).Insert parameter abc I made into a text box within the same idw file.

I made a set_parameters rule, and the ilogic text of the above example is as follows:

'Open File and Scan line - Part = Impeller Casing Flange
i = GoExcel.FindRow("sample.xlsx", "Sheet1", "Part", "<=", "Impeller Casing Flange")
'abc = Material Width
abc = GoExcel.CurrentRowValue("Material Width")

I had no problems with the first two steps, after checking the parameters I could see that parameter abc is being updated successfully.

However, I am having trouble with the third step. In the format text dialog box, I can see a drop box for components, but I can't find a reference to the idw file in there.

My question is, am I going the wrong way about this? Should I have assigned the parameters to a component instead of the idw file?