macOS From NSMutableDict back to NSMutArray

I successfully stored an NSMutableArray with NSStrings in an NSDictionary and saved it to a plist. When the program opens again it reads in the plist and populates the NSPopUpButton with the key names from the Dict.So far so good, but I am unsure how to restore the NSMutableArrays from the dict? Is there a copy function that I use, a for loop or some other mechanism?

Any help or direction to doc's on this matter would be helpful

Thanks

I found the answer looking through a bunch of Google posts

thanks.