PDF Report using 2 or more "SubSelect" fields ?

Hello.

I followed the SC video tutorial on making the PDF report.

They use a “SubSelect” field to bring records in from another related table.

I tried this and it works fine.

Problem is I have 3 related tables that I need to include there fields on the PDF invoice.

When i try to add a 2nd “SubSelect” field I get an error when I run the app that says…

Fatal error: Unsupported operand types in C:\inetpub\wwwroot\scriptcase8\app\TCM\pdfreport_tb_inventory_work_orders\pdfreport_tb_inventory_work_orders_grid.class.php on line 1389

Is it it possible to have 2 “SubSelects” in the PDF Report?

Any help is appreciated.