creating webdynpro model in caf

hi,

I have imported a web service in caf and have created an appication service to access the methods. and when i tested it,it works fine. Now i want to integrate this with webdynpro and hence i create a webdynpro model over it. I have followed some of the documents given in forums to do it and now i can see the model classes.

but when i add used DC's and try accesssing the entities it doesnt show any. I mean when i open my component controller to add the model nodes,i dont see any model nodes under it.

what could be the reason for it?

my NWDS is Version: 7.0.06 and I'am using SP7

thanks