How to set a attribute value of a sub node binded to a table.. pls respond.

Hi friends,
I have context defined like this.
Head_node ( table 1)
Item_node ( table 2, sub node ). ( now this im saving in global internal table).
so now when i hit save button, im passing my internal table (it has col1- sales order no, col2 item details(table type, which can have more than one record) to a FM, to create sales order.
My sales order is getting saved.
But the function module will return some new values (like sales order number, item number etc).
Now i want these values to be updated in my context.
Meaning whenever after that i do get_attribute, i should get these new (sales order no, item no ) also.
I dont know how to set the context values of sub nodes , so im missing these values.
kindly respond back to me..
thanks in advance,
Niraja

Its very simple.
Follow these steps. e.g you want to get the new sales order number. Define a attribute in ur node (or set of attributes in ur case as per reqruirement) say new_so_number.
Check your FM, if its returning new_so_number then it's fine, otherwise you have to change the FM to return the new_so_number or you have to get from db table somehow, which best suites your req.
So once you have new_so_number after calling the FM, say in lv_new_so_number field. Then write this code to set the attribute (change the variables as per your context attributes)
DATA lo_nd_head TYPE REF TO if_wd_context_node.
DATA lo_el_head TYPE REF TO if_wd_context_element.
DATA ls_head TYPE wd_this->element_head.
DATA lv_new_so_number LIKE ls_head-new_so_number.
* navigate from <CONTEXT> to <HEAD> via lead selection
lo_nd_head = wd_context->get_child_node( name = wd_this->wdctx_head ).
* get element via lead selection
lo_el_head = lo_nd_head->get_element( ).
lv_new_so_number = new_so_number. " (You got this as a exporting parameter of FM etc..)
* get single attribute
lo_el_head->set_attribute(
 EXPORTING
 name = `NEW_SO_NUMBER`
 value = lv_new_so_number ).
Hope it works.

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