Resorting of components and display on WWI report

Hi,

we would like to display the ingredients of a compostion on a WWI report. We have implemented a user exit GEN_POSRG to change the sorting order of the ingredient before the output. The ingredients need to be displayed as a flow text separated by comma. Unfortunately the combination of both cases does not seem to be that easy. I tried to use two POS repeating groups (S:POS;1) and comma (S:POS;2-) to show the first ingredient and then in a loop all other ingredients with a preceeding comma. When attaching the user exit to both POS groups the first POS group wil lonly get the first ingredient instead of all. So the sorting does no work.

Any idea on how to solve this?

Regards, Michael