public void setWorldMax(Vector3f worldMax) {
        this.worldMax = worldMax;
    }
Alter the coordinate range. Not allowed after attaching the app state.

@param worldMax the desired maximum coordinate values when using
AXIS_SWEEP broadphase algorithms (not null, alias created,
default=10k,10k,10k)
jme3-jbullet/src/main/java/com/jme3/bullet/BulletAppState.java