How to determine line height?

Hi, I’ recently producing a font that should work as tiles. The pattern sits on the baseline, no decscender. Is there a way to determine a line height value (for example 100%) in Glyphsapp to make the font work?
Thanks a lot
Ekke

You can set a “EditView Line Height” custom parameter in Font InfoFont that matches you UPM to preview the pattern in Glyphs.

Other apps may use different line height values. You can set some parameters to influence the default line height of the font that is outside of Glyphs, but most apps will apply additional line hight factors.

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Have you read this: Vertical metrics | Glyphs

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Thank you, I will try that immediately!