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How to call a FM for a BEx Variable


I have created a BEx Variable of type Customer Exit called 'ZCA8764'

I intend to actually automatically calculate the number of days in the month.

Through some discussions here, I found that I can use a FM NUMBER_OF_DAYS_PER_MONTH_GET

So, I went to CMOD.

But there onwards, I don`t know how to write a code to link the Variable and the FM.

Can someone please advice with a sample code ?

Can someone please assist.

Former Member
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