Animated movie clip with button function , posssible?

Here is my problem : I have 5 mc ( animated each one with tween/ mx transition with onrollover an rollout function). Each mc must behave as a button, meaning that each has to load an external swf.
I can load a swf from a button but not from a movieclip.
Can somebody give me a tip - a function for example.
I tried to put the following code on each mc :
on(press){
loadMovie(“patchwork.swf”,“image1”);
}
but nothing works of course :trout:
1000 thanks.