duplicateMovieClip fine but not beneeth my mask?

[Lennart1968]

Hi

I am making snow and to make it loop I m trying to duplicate my movieclip.
Which I do like this:
_root.bilde1.snowflake.duplicateMovieClip('snow',' snow2',1,snow);

then on the frame before I :

_root.bilde1.snowflake.RemoveMovieClip('snow2');

and that works! but it comes on top of my mask -anyone knows how to keep it inside the mask????????
I have the mask on the bilde1 mc and then on a layer underneeth
my snowmc.

Then my second problem is that there must be a smarter way of looping it??????????
Because the way I have done it make my snow suddenly disapair( where I remove my mc)


Any easy tip on this -sorry for my bad English
If this was hard to understand please se my attached .fla