adding value node

Hi,

I have tried to add value node to the standard context node. it was done properly. I got the field into Ui creating new config.

But here the problem is i am getting some exceptions on the UI.

gui :

component : bt_addr

view : contactaddrov

there are 5 context nodes in it.

i wanted to add value node to the 3rd context node.

web ui :

contact search->contact overview of any contact->work addresses assignment block( In this assignment block i need to add one new field(contactallowance this filed is there in the builheader ).

sap crm 7.0

Thanks in advance,

Srinivas.