fader control other fader on different container

hi

on same container if i used :
name.x = name2.x one fader control other fader.
but if i want to control a fader with other one on two different container.
the script upside don't run...
i have try to give the "pass":
containerName.name.x = containerother.othername.x script stay in red.

where is the solution ?
thanks
0-0

and just a stuff, for new version... it was good if on "alias" we can create custom address...

Try something like that:

Container2.Fader.x = Container.Fader.x;

Hope that helps,
BxSj