Add field to Inventory Aging report in Inventory and Warehouse mgnt

I'm looking to add the ReqGroupID, which is the Coverage group from the InventTable to the Inventory Aging report. I've added this to the newly copied project on the report along with the temp table. I'm unsure of where else I need to add this to make sure it populates on the report.  When I look at the table the ReqGroupId shows the actual Coverage name, but unsure if its giving me the description tied to the ReqGroup table.  It's blank when I run the report, but can't find where it populates that field. The query is a select* force literals.....