Height (attribute of property)
The height attribute is used only with properties of type image. It specifies the height in pixels to which an uploaded image must be resized. If used in conjunction with the imagecopyof, it specifies the height to which the copy of an image property will be resized.
<property name = NAME label = LABEL type = "image" height = HEIGHT />
<property name= NAME label= LABEL type="image" height="100" />