I am wanting to show a custom field in Pick ticket PRH1 from Item Master ITM. The field is showing, but it is duplicating the last line to all lines above. I have added the affzo, but I think I am missing the NBLIG and am not sure how to use it. 

The field action from the screen is in ITMREF

Subprog AV_ITMREF(VALEUR)
Variable Char VALEUR()
[M:PRH1]ZRELEASEDATE(nolign-1) = [F:ITM]ZRELEASEDATE
affzo [M:PRH1]ZRELEASEDATE(nolign-1)

End

Line 1 release date field should be different from line 2