gentoo file-manager: howto icon

Hi.
I use Gentoo the file-manager in Cygwin.
I want to give a special icon to a shell script and can't succeed.
The script name is xpsa.
So far, using the Configure pane, I tried to create a new file type
(ie. Executable, xpsa), with the settings:
- Require type: File
- Require protection: Executable
- Match name (RE): xpsa
- Style: xpsa
and a new style:
Root > Executable > Tools > xpsa
and with the "Icon > Override parent's" button checked, I picked a
newly created xpm icon.
But all this fails and the xpsa script keeps the original icon.
What am I doing wrong?
Thanks.

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