Watching the robot position (motion jointtarget)

tlt russia
Good afternoon!
Could you clarify, is it possible to make a watching the jointtarget position (values of axis 1, 2, 3, 4, 5, 6)?
I can get the current jointtarget by ....MotionSystem.ActiveMechanicalUnit.GetPosition() and then .....RobAx.Rax_1.ToString();
Do we have any event for watching position value changing instead of timer or button clicking for updating actual jointtarget?
Thank you!