=======================
Setup of Hitch Position
=======================

For the visualization of the tow rope, it is advantageous if a hitch position is defined for the AI tow plane.

To set the hitch position for the AI aircraft, add the following code to the top of the :file:`{aircraft}-ai.xml` file:

.. code-block:: xml

    <?xml version="1.0"?>
    <PropertyList>
      <nasal>
        <load>
          var acNode = cmdarg(); # "/ai/models/aircraft"
          acNode.getNode("sim/hitches/aerotow/local-pos-x", true).setDoubleValue(x); # forward
          acNode.getNode("sim/hitches/aerotow/local-pos-y", true).setDoubleValue(y); # left 
          acNode.getNode("sim/hitches/aerotow/local-pos-z", true).setDoubleValue(z); # up
        </load>
        <unload>
          acNode.getNode("sim/hitches").remove();
        </unload>
      </nasal>

      <!-- Rest of content here -->
    </PropertyList>

In place of ``x`` (forward), ``y`` (left), ``z`` (up), enter appropriate values for the hitch position. The units are meters. 

That's it! The tow rope ends at the defined position.