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nsarraycontroller, binding and plugin protocols

Hello,

Thanks to help from this forum I have developed a simple plugin system that uses a formal protocol. In my main application I am creating an array of objects of different classes that all implement the protocol. One pair of methods common to all the objects (and in the protocol) is name and setName. I want to display the name of each object in an NsTableView. I approached the problem by creating an NsArrayController in IB and creating a key for name. In the inspector I set the object class name to the name of the header file containing my protocol. I set the bindings in the NsTableView as I would for a 'regular' NsArrayController. When I fire up the application I am told that the class is not key value coding compliant for the key I defined. Is it a problem to use a protocol file as the object class name? Is there another way to approach this? Would switching to an informal protocol help?

Thank you,
Ryan
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