Relate Context Attribute

Hi,

I have created one dc with Adaptive Rfc Model for (Bank GetList). For this i gave apply template called (relate context attribute). It has generate method for local node to bapi node. But i didnt get result for this.

1. I have mapped Source node of Bapi input to Target node of Local node Input.

2. I have mapped source node of Local node Output to Target node of Bapi node Output.

I dont no the functuionality of the (Relate Context Attribute). If anybody know about this means please explain how to use this.