Hello all, this worked years ago with another variable font. But it fails with FiraCode. I get always the same weight: \definefontfeature[w300][default][axis={weight:300}] \definefontfeature[w400][default][axis={weight:400}] \definefontfeature[w500][default][axis={weight:500}] \definefontfeature[w600][default][axis={weight:600}] \definefontfeature[w700][default][axis={weight:700}] \definefont [FiraCode@300] [file:FiraCode-VariableFont_wght.ttf*w300] \definefont [FiraCode@400] [file:FiraCode-VariableFont_wght.ttf*w400] \definefont [FiraCode@500] [file:FiraCode-VariableFont_wght.ttf*w500] \definefont [FiraCode@600] [file:FiraCode-VariableFont_wght.ttf*w600] \definefont [FiraCode@700] [file:FiraCode-VariableFont_wght.ttf*w700] \starttext \csname FiraCode@300\endcsname FiraCode, weight=300\par \csname FiraCode@400\endcsname FiraCode, weight=400\par \csname FiraCode@500\endcsname FiraCode, weight=500\par \csname FiraCode@600\endcsname FiraCode, weight=600\par \csname FiraCode@700\endcsname FiraCode, weight=700\par \stoptext the font is availabel at Google: https://fonts.google.com/specimen/Fira+Code It also fails with another variable font. up-to-date lmtx on macOS. thanks Herbert