ligature issue for : eq ---> =

I am a fontcreator new user
I made a font file for scientific purposes that contains only the BASIC LATIN block.
I want it to be replaced by the = sign
Why this ligature shown in the picture did not work
i have tried both standard and discretionary ligature
By the way, I modified the = tag from automatic to ligatour in OT class
The ligaturing works properly in the OpenType Designer window,(see the image) but when I tested the file, I did not find it working properly
ligature.jpg

How do you test your font?

By default the liga feature is not enabled in Word.

by :

  1. tets desktop font(ttflotf)
  2. and installing the font in windows and use it in word document

Do you suggest another feature?

You can enable standard ligatures in Word.

But maybe required ligatures better suits your needs.

ok, thanks Erwin