editingAccessoryView not showing custom view

[TheRekz]

I wanted to have a custom delete button and tried doing this inside my cellForRowAtIndexPath, however it is still showing the old delete button, why is this?

 UIButton * delete = [UIButton buttonWithType:UIButtonTypeCustom];
            [delete setFrame: CGRectMake(260, 20, 33, 33)];
            [delete setBackgroundColor:[UIColor clearColor]];
            [delete setBackgroundImage:[UIImage imageNamed:@"DeleteIcon.jpg"] forState:UIControlStateNormal];
            
            cell.editingAccessoryView = delete;