Add Trans fields to A/R Detail Report

I'd like to add ReferenceNumber and Comment fields from Transaction to the Accounts Receivable Detail Report. but I don't know how to do the joins to do it. I've tried joining the transaction table but it errors out. Maybe because there's a procedure call as a table in there?

Have any of you added Trans fields to the A/R Aging rpts?

Thanks,

Rick Brown DataBasics