ok i have 100 movieclips and i need to randomly pick out 5 of them and change their frame...

Code:
function starts(c=0) {
do {
num = Math.random (100);
gotoandstop ("_root." & num, c);
c++;
} while (c < 6);
}
that doesn't seem to work... the 100 MCs are all named from 1-100. they each have 5 frames.