Try var:cl:score or is it var:pl:score
<var:cl:score>
also, on the first line "1 2 21" as the target lines, i thought it only checked between the 2 numbers, and didn't have 3
move line 21 to line 2, delete the old line 2, change onrelay to onvariabletrue, then change the target from "1 2 21" to "1 8"