I have four separate text layers (each have custom expressions so must be separate instead of a single paragraph) and I wish to create a single slider control that simulates a line spacing control across all four layers as if they were all part of a single paragraph of text.
I've been attempting to do this via y-value expressions which exponentially increase for each layer (as below) but this doesn't work as the amount they need to change relative to each-other is variable based on the line spacing itself.
First layer -> value+(thisComp.layer("Null 53").effect("SPACING")("Slider"))*10
Second layer -> value+(thisComp.layer("Null 53").effect("SPACING")("Slider"))*12
Third layer -> value+(thisComp.layer("Null 53").effect("SPACING")("Slider"))*15
Any help with this would be fantastic - I'm fairly new to AE expressions so would love to learn from some pros!