How can I replace a standard search help in SRM 7.0 as enhancement?

Question

Hi experts.
In SRM 7.0, Shopping Cart, Account tab - when using search help for the Cost Center field, a search help 'KOST' is called in the backend system.
I need to replace this functionality with a call to a local search help.
Being newbie in WebDynpro, I expected to be able to make this change in the Context field, search help attribute as an enhancement, but that was not possible.
Thanks in advance!
Per

Answer 1

Hi again.
I tried the proposed solution with no luck.
The problem is, that the standard program is dynamically accessing the attributes of the field I deleted and then I got a short-dump
The solution was however quite simple, when I first had the idea.
If SAP can access a screen field dynamically adding a search help, then I probably could do the same.
So I created a enhancement post exit in view method "WDDOMODIFYVIEW" with this code:
DATA lo_nd_account_detail TYPE REF TO if_wd_context_node.
* navigate from <CONTEXT> to <ACCOUNT_DETAIL> via lead selection
  lo_nd_account_detail = wd_context->path_get_node( path = `COMP_CONTEXT.ACCOUNT_DETAIL` ).
  DATA lr_node_info TYPE REF TO if_wd_context_node_info.
  lr_node_info = lo_nd_account_detail->get_node_info( ).
  CALL METHOD lr_node_info->set_attribute_value_help
    EXPORTING
      name            = `COST_CTR`
      value_help_mode = lr_node_info->C_VALUE_HELP_MODE-DDIC
      value_help      = 'BBP_COSTCENT_VALUE'
  CALL METHOD lr_node_info->set_attribute_value_help
    EXPORTING
      name            = `G_L_ACCT`
      value_help_mode = lr_node_info->C_VALUE_HELP_MODE-DDIC
      value_help      = 'Z_GL_ACCOUNT'
The above code sets the search help for two fields in the Context.
Hope this helps someone out there!
Best regards
Per