Stop tweening me!

I have a series of attachMovie’d mc’s that were dynamically generated and named. They all have tweens attached to them that are also dynamically generated. So all these mc’s are careening all over the screen. I want the user to be able to grab one and drag it around - of course at that point I would like the tween to stop. Does anyone know how to have an object stop tweens that are attached to it?

I didn’t think either of these would work, and they didn’t:

mc.onPress = function() {
this.tween.stop();
}
mc.onPress = function() {
this.name_of_tween.stop();
}

Anyone got any other ideas?

Thanks,
Jerome