Calling Functions

Does anyone one know if it is possible to call a function from a different movie clip than the one it is in.

For example, a function named loadData()
which is on the first frame of a movie clip instance named thumbNail
which is on level 0 on the stage

i was thinking that it should work to call the function from frame one on the stage with…
thumbNail.loadData();

so yeah, any help would be greatly appreciated.

:red: nol