Cannot bind WebService model nodes in Context-Coding

Hi,

I try to bind a Model to my View's Context with this coding.

Request_WssprocessorViDocument_getKsViews request = new Request_WssprocessorViDocument_getKsViews();

wdContext.nodeResponse_WssprocessorViDocument_getKsViews().bind(request);

But I get the compilation error: The method bind(Collection) in the type IWDNode is not applicable for the arguments (Request_WSSprocessor...)

Can you tell me why?

best regards

Mathias