Help with Template

I am having issues with my template for a pdf.
I have used the Start: Select() with Jobs being the table, Job being the key for that table. I want the rows with Week Ending that match _THISROW Week Ending and the Client matching also.

I believe I have done this I even have a virtual column which returns these values and have tried just using that in the start but no luck. it just says the columns dont exist?

Any help would be appreciated


Please post a screenshot of the error.