Help with UpDown

[BALA]

I have an UpDown that I want to use to allow the user to edit the time. The user will choose if they want to edit by hour, minute, or second, using three radios. Only, when I use the UpDown, it just resets the input back to digits (i.e. it geo sfrom 12:00:00 to 1, 2, 3, ...). I can do the radios, all I need is a way to edit the time.

$input = GUICtrlCreateInput ("12:00:00",10,60, 60, 20, 0x0800, $ES_READONLY)
GUICtrlCreateUpdown($input)