Letter-spacing will not decrease on Edge Animate

I need to add a line of code since it will not decrease the letter spacing to -20px. It only increases on Edge Animate. I was told to add this line of code below -

sym.$("Text2").css("letter-spacing","-20px");

but couldnt find CompositionReady of the Stage actions. There are files like filename.html, filename_edge.js, and filename_edgeActions.js

Which file above should I add a line of code to?