access global vars with browser execute javascript

Hi,

I try to access to global variable with my custom javascript

Add event > System > On start of layout > Browser > Execute javascript > alert(this.runtime.all_global_vars);

In my Chrome Desktop, it works and return an array with all vars, but when I try it on an Android device or an iOs device, the game crash.

Any idea ? <img src="smileys/smiley5.gif" border="0" align="middle" />