Jquery & mootools conflict

Jquery & mootools conflict

Hey everyone i have a page where i need to have both classes working.

i used the
var $j = jQuery.noConflict(); (its loading after the class files are loaded)

renamed all my jquery $ to $j

then i have my mootools and im still getting an error saying:

Error: $ is not a function

but I though noconflict fixed this problem? All my jquery stuff is wroking though.Any clue?
thanks