Putting an iframe in a div thats inside a symbol?

Question

I am trying to load an iframe into a div thats inside a symbol. I dont think im getting the path correct?
var externalUrl = "login.html";
sym.getComposition().getStage().getSymbol("Navigation").$("navWrapper").html("<iframe src='"+externalUrl+"' height=230px width=430px scrolling=no frameBorder=0 allowtransparency=true margin=0 padding=0></iframe>");
So the symbol is the ("Navigation") and the div im trying to load a iframe into the div inside that symbol named ("navWrapper")
Dont worry im not loading a navigation through iframe :3
Help much appreciated!

Answer 1

Thnx for the reply!
Sorry for any confusion there are no buttons involved. I am simply trying to load a html form into a div by using iframes. The navigation names are just names and not refering to a button or actual menu of any kind. Which is confusing i know.
So i have a symbol named Navigation with animations in it. And inside that symbol with the animations is a div names navWrapper that im trying to load a html file into. But its not working.
I can get it to load fine when the div navWrapper is on the main timeline by using
sym.$("navWrapper").html("<iframe src='"+externalUrl+"' height=230px width=430px scrolling=no frameBorder=0 allowtransparency=true margin=0 padding=0></iframe>");
thats the same as the code posted in my first post but without the sym.getComposition().getStage().getSymbol("Navigation");