Mercedes W201 190E 16V EVO

iam looking for 1 small plastic clip which is mountet in the front doors door panels on the outside of the car. Its located on the bottom of the door, and you can screw it then with a screw on the door : I took 2 picture of what i need. The local Mercedes-Benz dealer CANT order it.. because they cant find it...
[img=http://img54.imageshack.us/img54/5672/onderdeeltje.th.jpg]
[img=http://img54.imageshack.us/img54/6524/foto27s0139.th.jpg]
Can someone please help me ??? its the only part i still need...

Screw: 2019902036
Clip: 0029941945

are you sure its the one i need ? it has the be the one on the bottum of the panel. The top one i still have and has another shape.

Thanks for this sofar!