Getting the value of a variable from one movieclip into another movieclip

I have a master swf that holds two movieclips called menustage and mostpop. When a button is clicked in mostpop I set a value to a variable called _global.hit. When that button is clicked in mostpop I have it goto a frame in menustage. I want to be able to know what the value of _global.hit from mostpop into menustage. Currently I use this line to try and get it but when I trace it I get undefined. Any help?

trace(this._parent.mostpop._global.hit);

I traced this._parent and got level 0.

Thanks for any help.