How to access symbol from different stage

Hi everyone,

I'm really new at Edge, so I still have a lot to learn and I need your help with something..

I want to know how to access a symbol from another stage, here's what I've and what I want to do..

I've the main index page with symbol named "content", in content I load other composition (page). called "page2".

all I want to do is when I click a symbol "XX" inside "page2". The "content" symbol loads other composition called "page3".

I don't know how to access "Content" from "page2", so I could load "page3" ..  that's it

I feel like it's simple, but I just couldn't know how to do it, I',m sorry for bothering you for such a question, but I've searched a lot and I got nothing.

Thanks