How to watch and alter a view's tabConfig custom attribute from controller

[senchaYewser]

Hello, I'm new to ExtJs and DeftJS, but am using ExtJS 4 with DeftJS on existing code base.

I have a view which is a tab Panel and contains code similar to:

tabConfig { myAttribute : 'customName' },

items:[
{ xtype: something, itemId: theId }
]

and in the controller it is watching the item using:

control:{
theId:true
}


but what I want to do is to also watch the tabConfig from the controller in order to change the tabConfig attribute to something else.

But I can't watch the tabConfig in order to be able to change it.

For example, if I give my tabConfig an itemId it fails to load the panel, is it that tabConfig's cannot have itemIds ? What I want to have in the controller is something like:

control :{
theTabConfigId: functionInController
}


please help,

thankyou