Using Stitcher extension as custom parameter (error)

Scripting
1

Hello everyone !
I am unable to export an instance with Glyphs 3.1.2 and the Stitcher extension as a custom parameter. I tried using a Pre-filter, search into the topics, change the glyph name of the component… I also tried to install another version of the plugin (from Github) but i still get the same error. Without a custom parameter, it works.
Thank you for your help
Below is the message and a test file :

Stitcher Process Error:
'GSInterpolationFontProxy' object has no attribute 'glyphForUnicode_'
Traceback (most recent call last):
  File "plugin.py", line 393, in filter
    componentGlyph = Font.glyphs[component]
  File "GlyphsApp/GlyphsApp/__init__.py", line 1766, in __getitem__
AttributeError: 'GSInterpolationFontProxy' object has no attribute 'glyphForUnicode_'

Capture d’écran 2023-11-04 à 16.27.04
Capture d’écran 2023-11-04 à 16.27.041302×954 38.5 KB

2

I fixed the problem but it shouldn’t be triggered if the filter was set up correctly. Check the “component” setting if it points to an existing glyph.

3

Thanks Georg, it was the origin points of the component…