         }
 
         if let controller = viewController {
-            changeContent(viewController: controller, itemIdentifier: convertFromNSToolbarItemIdentifier(toolbarItem.itemIdentifier))
+            changeContent(viewController: controller, itemIdentifier: toolbarItem.itemIdentifier.rawValue)
         }
     }
 }

        guard let toolbarItem = sender as? NSToolbarItem else { return }
        var viewController: NSViewController?

        switch convertFromNSToolbarItemIdentifier(toolbarItem.itemIdentifier) {
        case kToolbarItemIdentifierGeneral:
            viewController = GeneralViewController.shared
        case kToolbarItemIdentifierMute:

        return toolbarHeight
    }
}
