this is starting to sound like work
Tell ya what...you make the form, put the checkboxes on them, and zip up and send me the result to
greg@tinwhistler.com and I'll add the 10 lines of code necessary to add them up
It looks like you were on the right track from the changes you made to the .MOD file/object, but that mod likely wasn't linked to the form you wanted to use with it, which was probably your only problem.
Oh, and tell me the precision you want on your percent, since 18's not a nice round number..you want like 17%, 16.7% or 16.77%? etc