I want to sum [Values] where [Cost Elem._COST_ELEM.FAGLFLEXA] = ‘90360100’ AND (+?) only [Cost Ctr_KOSTL.BSEG]’s relevant (associated) values are selected. There’s a one to many relationship between Cost Elem and Cost Ctr (1 cost elem to many cost ctrs) when a cost elem is selected. Is it even possible to just select the associated cost ctrs? Should I just list them out instead? The expression box bug won't compile/validate the rest of the expression for me. I want to make sure it’s good 1st because I have others to write based off of it.