How can I pass a dynamic value to another frame?

once the variable is set in flash it holds its value until the it is overwritten or the movie is refreshed... so if you set a variable on frame 1......it is available the rest of the movie. The only thing you have to worry about is making sure you address the correct timeline when you try to access it later.

i mean from one frame to another frame inside a flash file.

Did u mean HTML Frame hold a SWF?