How to set ActiveTask?

Lin

If the station has multiple tasks. "T_ROB1", "T_ROB2".

How can I set/change the ActiveTask.

_currentStation = Project.ActiveProject as Station;

_currentStation.ActiveTask = ?

I can able to find the tasks by

ProjectObject[] projobjs = _currentStation.GetAllObjects();

projobj.TypeDisplayName == "Task"

How can I set other task ["T_ROB2"] as my ActiveTask.?