Kinect measuring units

[NeatTeam]

Hello, we are trying to program a robot using LabView and the Kinect Camera and the Driver station ( National instruments ), We are new at programming with the kinect camera, we are trying to figure out the kinect's angle system and the measuring units of the kinect and how to get it onto LabView as a code. We've found out that when we raise one of our hands the y-axis value changes, but the z-axis and the x-axis do not seem to change no matter what we do ( Getting closer to the camera, tilting ect...). What we're trying to figure out is how to control the robot using the kinect with our hands at different angles. (e.g : the motor will start working when our hand is above 90 degrees but below 120 degrees).