RPL Data Question

I’ve got an RPL question for you and was hoping you might be able to help. I’m trying to look up a value in a table. However, we need to only look at the first 8 characters of the value in the table. For example, PRODUCT_ID = 12345678AA, however, we need to only look at the “12345678” part of that value. The first RPL below works (looking at the full value), however, the second RPL is throwing an error: Encountered "?" at line 459, column 80. was expecting: "=" . It appears you can’t apply any RPL functions to