[Kovs]

Here is a java Doc for RobotDrive.
Specifically, I would recommend looking at:

• The constructors
• mecanumDrive_Cartesian(double x, double y, double rotation, double gyroAngle)
• mecanumDrive_Polar(double magnitude, double direction, double rotation)
• setInvertedMotor(RobotDrive.MotorType motor, boolean isInverted)

And here is one for the Joystick class
Specifically, I would look at

• getX()
• getY()

I haven't coded mecanum, but I think you need 4 motors assigned to your RobotDrive instead of 2.

Also, try using the "search" button up top Where I found this similar thread