Hello,
i've been reading about this method to make simple programs in sap forms. I do the same things that you do, but i get no results. I explain:
I do this into the form:
/: DEFINE &ZGW01&
/: PERFORM CALCULATE IN PROGRAM Z_CALCULATE
/: USING &AFVGD-VGW01&
/: CHANGING &ZGW01&
/: ENDPERFORM
In the program i make this:
REPORT Z_CALCULATE.
FORM CALCULATE TABLES IN_TAB structure itcsy
OUT_TAB structure itcsy.
DATA: ZGW01 LIKE AFVGD-VGW01.
Read table IN_TAB index 1.
ZGW01 = IN_TAB-VALUE * 2.
Read table OUT_TAB index 1.
MOVE ZGW01 TO OUT_TAB-VALUE.
Modify OUT_TAB index 1.
ENDFORM.
But i don't get the out_tab-value into the form. Which is the problem?