So my question now is, can you use rtd_center = "{ 0, 0, 0 }" to set the center point ?

Ok, well I tried renaming the rtd_center = "something_else" with no noticed effect. It wasn't something_else but an actual point name within the model, but I'm away form my computer and can't remember what the actual point was. Is there a particular place where j should put the rtd_center? I put it on several of places in the .bin for the model I am using...