GASP table

I’ve been playing around with TrueType hinting in the beta. It appears that Glyphs always exports with the GASP table set to symmetric rendering at all sizes. I’d like to set it to asymetric rendering at 20ppem and below, and also to turn off hints above 50ppem.

Is there a way to set the GASP table entries? Looked in custom parameters for font, masters, and instances and didn’t see anything.

This is not yet possible. I’m currently working on the TTF stuff and will add it.