Quick Question about the for() loop

1

I have a lot of images that I’ve loaded into movieclips called “damebilde1, damebilde2, … damebilde23”.

Works:

_root.damebilde23.setMask(mc_mask);

Works only for damebilde23:

for (var i = 1; i<=23; i++) {  
_root["damebilde" + i].setMask(mc_mask);
}

It’s late. I’m tired. Someone please tell me what I’m missing. This is flash 9 and AS2.0 btw.