[Evolution] how do you pass arguments to a script that generates a signature?

[Mertens Bram <bram-mertens linux be>]

Hi,

I wrote a little script that can display some variations of my
signature, however this require passing some arguments to the script.

When I add the arguments to the name of the script in the add script
dialog (Tools > Settings > composer Preferences > Signatures > Add
script) I get the following error: 'please provide a valid file name'.

Is this currently possible or do I need several scripts?

TIA
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