How do I insert a Flat Pattern in a Drawing File?

I inserted a Flat Pattern in a drawing file using

"swDrawingDoc.CreateFlatPatternViewFromModelView2(strFileName, swThisConfiguration, 19.7, 2.4, 0, True)"

But my SolidWorks Application crashes when I execute the Macro.

I am using SOLIDWORKS 2006.

How can I insert a Flat Pattern in a Drawing File??

SolidworksApi macros