Layer to multiple Layers

Hi there,
I would like to ask if there is a way to copy a path from one master to multiple masters at the same time. Iam working with lot of master due to interpolation requirements and i have to do it manually, since in the script layer to layer by MekkaBlue is not an option to copy to multiple layers.

Is there some way to do this easily?

Thanks!

Try Fill up empty masters.

This script isn’t working for me. It does not even print anything in the macro window.

You need to select the glyphs first.