how to put line spacing in an After Effects template

[IuryApolonio]

I'm making an after animation template that I always use in videos at the premiere (e.g. headline, cta) I've already done the animation and put in all the settings that I want to be editable, but I'm not finding the spacing option between text lines. Does anyone know how to set this option?

[Airweb_AE]

If you're using AE 2025 you can add a slider control and the following expression.

Source Text Expression:

style.setLeading(effect("Leading")(1))