Is there a way to do that? I have only found the services to set REMOTE bindings as is explained in this links: http://support.ptc.com/help//thingworx/platform/r9/en/index.html#page/ThingWorx/Help/Composer/Things...
I am using Thingworx 8.5
Did you find the service SetLocalPropertyBinding? You will need to run the AddPropertyDefinition service first to create the property.