iOS Passing variables between views in Tab Bar Controller

Hi,

i'm having a problem with passing variables among ViewControllers in tab bar controller.
I've built an app using tab bar template. I've created several tabs (each one got viewcotroller and xib linked). UI works ok. BUT one of the views generate an NSMutableArray that needs to be passed over to another view.
And here's my problem, i don't know how to reference that NSMutableArray that has been generated in that other viewcontroller.
Could anyone help?

thanks
peter

Thanks for help, i figured it out myself finally.
Inside a viewcontroller that is managed by tab bar you can reference any other by

self.tabBarController.viewControllers - it's an array of viewController instances.