Kerning with lookbehind?

The font I’m using does not give enough space for the apostrophe when it is preceded and followed by a lowercase e:

e’e

How can I create a kerning adjustment that looks back to an e? I want to add space before and after the aspotrophe.

Thanks!

You can look into the kerning triplet tutorial:
https://www.high-logic.com/font-editor/fontcreator/tutorials/variable-contextual-kerning---triplets

Perfect, thank you.