# Variable fonts interpolate feature value?

**URL:** <https://forum.glyphsapp.com/t/variable-fonts-interpolate-feature-value/5565>\
**Category:** Glyphs\
**Tags:** feature\
**Created:** [December 7, 2016, 9:28pm UTC](https://forum.glyphsapp.com/t/variable-fonts-interpolate-feature-value/5565 "2016-12-07T21:28:59Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![davelab6](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/davelab6/32/429_2.png) [@davelab6](https://forum.glyphsapp.com/u/davelab6)\
**Post date:** [December 12, 2016, 9:14pm UTC](https://forum.glyphsapp.com/t/variable-fonts-interpolate-feature-value/5565/10 "2016-12-12T21:14:46Z")

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Well, @mekkablue wrote,

> No but you can replace features with custom code on a per-instance basis with the custom parameter of the same name.

That’s what I’m referring to also.

However, I thought there was some way for in-format interpolation of GPOS values - since it is required for positioning layout of complex scripts like Arabic or Telugu or etc.

I’ll ping the Type Drawers thread about this 🙂

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