Orchestration: How to get warehouse location in correct format to pass to next step?

I'm building an orchestration to update item lot location lot status code through P41280 using item, lot and location as a filter to select which line to update.

When I test the form request individually by entering item lot and location (formatted), I get the expected result. But when I attach it to a data request to get a list of items to update, the orchestration ends in error on the form request saying no data selected. I believe it's because in my data source, locations are unformatted while my input needs formatted location (I tried manually running the form request with unformatted location, I get the same error).