Open Type, Spaceing destroy

Hi, I just trying do my first open type code,

… everything looks great now, forum was very helpful,
but only problem is when I try to make bigger spaceing (use In Design)
open type feature stop working atl all,

– letter spaceinng (0 – 17) running
– same for negative spaceing
But after 18 – more, it stop

Thank you very much for your advise,

You are trying to add ligature to you font? That is a “feature” of Indesign that it tries to help you get even spacing.

If you really need to keep the ligatures, you need to put the substitutions into a different feature. Maybe ccmp or rlig.