Setting editActionsForRowAt action backgroundColor with patternImage swift 3

Question

I have this problem when setting backgroundColor with patternImage with swift 3 in tableView actionsForRow..

my code:

 delete.backgroundColor = UIColor(patternImage: (UIImage(named: "button-delete-default-png")!))

Any ideas? I've been searching about two days, and nothing..

Thanks in advance to any suggest!