mapping an external interface node get error

Hi,

I m trying the external mapping, what I have done is:

1. Goal: Component B should be embeded in Component A and get a parameter from a view of A

2. Defined a interface node in B, and has checked the node as Interface node and InputElement(Ex)

3. mapping the node in A

It has no error while compiling, but it went down with an error while the runtime:

The following error text was processed in the system S1I : External Mapping of Node ... Is Not Completed Yet

Can anyone give an advice?

Best regards