Weird selection option behaviour for "ON VAUE-REQUEST"

[mgross1]

REPORT  zmgtest.

TABLES sflight.

SELECT-OPTIONS : so_type FOR sflight-planetype NO INTERVALS.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR so_type-low.

so_type-sign = 'I'.
so_type-option = 'EQ'.
so_type-low = 'ABC'.
APPEND so_type.
so_type-low = 'DEF'.
APPEND so_type. 

When I run this report and click on the F4 help, I click the multiple selection button and I see DEF twice. Then if I click the F4 help again I see DEF, DEF, ABC, DEF.

I expect to see ABC and DEF on one click of the button. Does anyone know why I don't?

What I'm actually trying to do is create a select option for a filename and have the user select multiple files. The above is just demo code to illustrate my issue.

[matt]

At the event the first thing you should do is

CLEAR: so_type,
       so_type[].

If you run it in debug it'll be obvious why.

[mgross1]

matthew.billingham I tried that but I get the same result. Have you tried running the report?

TABLES sflight.

SELECT-OPTIONS : so_type FOR sflight-planetype NO INTERVALS.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR so_type-low.
CLEAR: so_type, so_type[].
so_type-sign = 'I'.
so_type-option = 'EQ'.
so_type-low = 'ABC'.
APPEND so_type.
so_type-low = 'DEF'.
APPEND so_type. 

[matt]

This is to do with the transport of values to and from the select options. You can't just set values in so_type. (Sorry, so long since I did this, I'd forgotten this point).

You have to use FM DYNP_VALUES_UPDATE and DYNP_VALUES_READ

[Sandra_Rossi]

For selection screens, instead of using DYNP_VALUES_... (UPDATE/READ), SAP recommends using RS_SELECTIONSCREEN_... (UPDATE/READ), so that it works for the detailed selection criteria dialog too.

[matt]

As I say. It's been a long time! 😄

[raymond_giuseppi]

matthew.billingham, a very long time indeed (New Function Modules)

[matt]

raymond.giuseppi - been doing this stuff since 1997... 😮