PERFORM in Z Function Module

Question

Greetings!
I'm creating a Z function module and within it I will looping through an internal table and would like to add a PERFORM routine where I pass a couple of data variables from my itab and then within the PERFORM routine take that data with some other coding/validating and fill an internal table from the main function module however when I build the PERFORM routine in the fm include it doesn't recognize my internal table.
my code looks a little like this in the fm..
loop at itab...
perform validate_data using var1 var2 va3.
endloop.
Do I need to pass the itab with a CHANGING parameter of the PERFORM call?

Answer 1

Hi
U can became the parameters of fm interface as global data:
In trx SM37 go to EDIT->INTERFACE->GLOBALIZE PARAMETER
else
- or u need to use an USING parameter in your FORM in order to transfer the data from z fm to form;
- or u need to use a workarea defined as global data in order to transfer the data from z fm to form.
Max