I guess you could just access the height and change it:
Code:
view.frame.size.height = SOMETHING;
(If you check the frameworks, you'll realize that height is a CGFloat, part of a CGSize structure, size is a CGSize structure, part of a CGRect structure, frame is a CGRect, and frame is a property of UIView)
Although if that doesn't work, you could just make a new frame, and use the old properties that you do need, in this case:
Code:
view.frame = CGRectMake(frame.origin.x, frame.origin.y, frame.size.width, SOMETHING);