ok i will try this out !!
Update 1:
Well doenst work too .... now step by step
1. I load the .dae file.
2. create a shape and resize it to the model and create a body with the shape.
3. I connect the shape to my model by going to outline.
4. i change the user defined variables to "wheel"
5. I create a joint_hinge and attack it as a child to the body .
6. I save it , load it in my map and load the custom story but wheel wont work ...
what i am doing wrong ?
Update 2:
now its working .... i forget to set anything in the body category like " mass " "Angular dumping" . Now searching for the right field which was the problem .... I think it was the "mass" field cause it was set to "0"
Update 3:
http://www.youtube.com/watch?v=Sez61s7OxZ0