Concurrent program paramter set up

Hi ,

we have a report which takes multiple paramter as inputs. we have situation with 3 parmaters, the first paramter does not need to be required but if user is giving the 2nd and 3rd parameter, than user need to give the 1st paramter also.

we used the :$FLEX$.values_set_name to accomplish the connection between 1st paramter with 2nd and 3rd paramter, but the issue here is that the 2nd and 3rd paramter is only takes varchar, it is not a values set. I can't add the $FLEX$ condition to the 2nd and 3rd paramter.

Could anyone help me on this ?