core data - Xcode bindings: can not add object to NSArrayController -

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have entity axis relationship [to many] entity axisvalues.

, try add axisvalue object selected object axis. bind 1 nsarraycontroller axes managedobjectcontext, entity axis. second nsarraycontroller selected axis values entity axisvalue bind contentset axes, controllerkey selection, modelkeypath axisvalues.

in interface works nice, in nstableview have proper values. cannot add or remove axisvalue objects action add: or remove: connected selected axis values controller.

how bind selected axis values have possibility add , remove objects actions add: , remove:?


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