Help with amount of layers in a movie

programming flash
1

function attachNew(linkName, newName, depth, xvalue, yvalue, avalue) {
newAttach = _root.attachMovie(linkName, newName, depth);
newAttach._x = xvalue;
newAttach._y = yvalue;
newAttach._alpha = avalue;
}
attachNew(“Frame”, “frame”, 1, 323, 323,0);

if i have more than 14
mc’s attached i cannot add any more

so when i get to

attachNew(“Example”, “example”, [COLOR=Red]15[COLOR=Black], 123, 123, 9);

nothing happens it does not place my movie clip

any advice?
[/COLOR][/COLOR]