Ah, ok. Two things I noticed.

One is that the variable name you are ultimately trying to insert, e.g., rse should not have the <> around them when listed in the responses.xls file--only in the text where you want that value inserted during the session (e.g., back in your question wording like "you scored <rse> out a possible..."

The other thing I noticed was the blank line--not sure, but I recall some issue way way back that a user had that was resolved by removing a blank row in the middle of their responses.xls file.

Regarding variables named 10, 11, 12 etc.. Calculated variables in the responses.xls file that have numeric names are not an issue, unless you want to insert them as values in your session (e.g., using <10> in your question wording). In that case, I don't know what would happen--never tried it. As temporary variables used to help calculate other variables though, I don't expect it would be a problem.