Is this for the purpose of displaying the description related to a selected parameter value? You can either create a formula that hard codes the values as in:
numbervar i;
numbervar j := ubound({?parm});
stringvar display;
for i := 1 to j do (
display := display +
(
if {?parm} = value1 then "Boston" else
if {?parm} = value2 then "New York" else
if {?parm} = value3 then "Los Angeles"
) + ", ");
left(display,len(display)-2);
Or, you can insert a subreport that uses tblGroups and displays the description in the detail section. Create the same parameter in the subreport, add a record selection formula to the sub like:
{tblGroups.value} = {?Parm}
and link the sub to the main on the parameters, by using the dropdown in the lower left of the subreport linking screen.
-LB