Tree (array not scalar) property to set highlight of an item

[sdserlin]

I have a tree control that has the selection mode set to array. I need to set the highlighted row of both a parent or a child.  Only one row at a time to simplify things. I do not know if there are two steps to this. One step being to change rows and another to turn on a highlight property on that row. I have not been able to figure this out. Any suggestions?