property Items.ItemMaxHeight(Item as HITEM) as Long
Retrieves or sets a value that indicates the maximum height when the item's height is variable.

TypeDescription
Item as HITEM A long expression that indicates the handle of the item.
Long A long value that indicates the maximum height when the item's height is variable. 
By default, the ItemMaxHeight property is -1. The ItemMaxHeight property has effect only if it is greater than 0, and item contains cells with CellSingleLine property on False. Use the ItemHeight property to get the item's height.