double uv maps in blender

[flash-rules14]

,hey, anyone already had used double uv maps for buildings in blender ?, I did it, know I got one uv map for diffuse texture and one for specular texture( with just the AO), I manage to use the diffuse texture but not the specular one, I checked specular and hardeness but nothing works, how to use the two uv maps ?

 

thanks and good evening