CATIA VBA Macro for comparing 2 drawings

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Hi,

I wanted to write a catia macro for comparing 2 drawings using DMU 2d drawing compare method.

Anyone have sample code to start with would be much appreciated?

Requirement
1: Macro should ask user to select 2 drawings.
2: Compare drawing and output the result in Presentation
3: Old drawing to be in green color and new changes in red color.
4: Areas where both matches, should be in yellow color.

Thanks