In WFT, For External task, We do like this.command v = __INSERT__("$XXXX"); and this XXXX will call in same WFT,my $XXXX = "$iwhome/iw-perl/bin/iwperl $iwhome/custom/bin/scripts/wf/XXXX.ipl"; But for WFM, in command property, i can give only path of ipl, but if i want to insert some value and do a call back, how do i do.Any suggestions.Thanks