Display additional levels of GHR SupervisorChart

By default the SupervisorChart (list) displays two (2) levels.  We would like to increase this to possibly 3 or 4 levels. 

Using LPL I have tried to state the max levels and/or show levels but neither is working.  Any thoughts/recommendations?

implements TreeView

    max levels is 3

    show 3 levels

Thank you.