This double-evaluation bug has existed since MC v4.2 (the earliest engine I have immediately to hand). [snip] on mouseUp put "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16" into myVar repeat 1000 add zero to any item of myVar end repeat put myVar end mouseUp [/snip] Hugh Senior FLCo