Unable to run two instances of wookie on one machine

It is possible to change the port number by setting the "run.args" property in "local.build.properties" however, it is not possible to run two instances of Wookie on the same machine as the port for the monitor thread used to stop Wookie running is not configurable,

This port number appears in line 123 of org.apache.wookie.server.Start

This should be configurable from the properties setting.