>I know I'm not the first to ask, but I wasn't clear about the answer before: what is the best way to return multiple parameters from a form? I have been concatenating my parameters into a string with a separater "|" character, which seems dumb. I believe I tried returning them all in an array but couldn't get that to work.

You should have property-array in some place of your application to do this job. I usually have main Formset where I have properties regarray1(1),regarray(2)... just for this purpose: you refill this array in e.g. Init and Destroy events of particular form.