Forums Scripts & Popups idle time in x:xx mins format

do you know why this doesnt work(im posting it here so i dont get flamed for new threads) thanx for any help

/timertest $calc($inmp3.length / 1000) 1 //echo -a $asctime($calc($!inmp3.pos / 1000),n:ss)

it always echo 0:00 it doesnt update.