NSMatrix simple binding question

I am trying a sample application in which I have taken following controls:

i. NSMatrix (with 2 elements, serving as radio button)

ii. Button (which when clicked generates action based on radio button selected)

My questions are-

In IB, can we bind each button cell of NSMatrix to a single bool variable, say- firstElementValue, such that when user selects first button cell in NSMatrix, firstElementValue is YES and when user selects second button cell in NSMatrix, firstElementValue is NO.

or

Is there any othe开发者_StackOverflow中文版r effective way to achieve this ?

Please suggest.

Thanks,

Miraaj

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I resolved it by setting NSNegateBoolean as value transformer for one of the radio button cells :)