Hi Every body

I am running an application with openni_tracker.

I want the robot follow the user, when I start the application (roslaunch opennitracker opennitracker), then I stand up in front of the sensor and I get the following:

New User 1---- Pose Psi detected for user 1----- Calibration started for user 1---- Calibration complete, start tracking user 1---- lost user 1------

New User 2---- Pose Psi detected for user 2----- Calibration started for user 2---- Calibration complete, start tracking user 2---- lost user 2------

and so forth-----

It looses New User 1, and start with New user 2, 3 and so forth.

1.-Is there a way to guaranty that the openni_tracker sticks with New user 1?

In advance thank you for your help :)