Dimiter Prodanovs Gran Filter applied to stacks?

[Sven Roth]

Dear list members,

This is probably a very simple question:
I want to use Dimiter Prodanov's Gran filter as a band-pass filter to
discriminate grains of a certain size.
This plugin performs only on one image, or the opened image in a stack.
How can I apply this filter to all images of a stack?

Thanks a lot and sorry for cross posting
regards Sven