Reset time OpenNI Kinect

I'm using OpenNi to run Kinect in Unity. I would like to change the time of reset the capture, usually takes 10s to reset when the player get out of in front of the camera. I would like to change this time to 5s. I looked at "OpenNIUserTracker" and others OpenNI'scripts to find where they control the time of reset, but I didn't find.

Anyone knows where to change this "reset time" variable?

Tks