BPS_WB: Update on change

Question

Hi,
we have BW30B/SEM31B, BW SP25/SEM SP24. We have several planning layouts for the web.
On my web application (web interface builder) there are two dropdown list boxes for variable a and b. b is an exit variable with a function module.
Now we need to refresh and re-execute the function module for b when a changes its value. Therefor we did the following:
- add parameter WEB_REFRESH_ON_CHANGE value X in UPC_DARK2 table
- use the new layout in WIB
- Paramter "update on change by" of variable b we set to "=a"
But selecting another value for a does not force a re-executing of the function module for b.
We ist not correct? Can anyone help?
Thanks,
Mathias

Answer 1

Hi Marc,
the "event on selection" parameter of A is set to true. Meanwhile I found a hint in OSS 720265 that says the following:
>>> OSS 720265
You must code the dependency yourself in the generated class. You can force the selector to be refreshed, if you add the following line of code in the Initialization method, before the selector should be checked for the initial (inactive) state.
    SelectorToRefresh->m_subrc = 3. " force initialization
For example:
"*** inserted code ***
  if selector_shoud_be_refreshed. " use meaningful condition here !!!
    SelectorToRefresh->m_subrc = 3. " force initialization
  endif.
"*** end of inserted code ***
  if SelectorToRefresh->m_subrc > 2. " inactive
    SelectorToRefresh->api_get_variable( ).
  endif.
>>> End OSS 720265
I did so and now I really get into the module at the right time and can stop at a breakpoint within it! But now it seems that the changes do not affect the appearance of the dropdownlistbox in web. The shown entries in the ddlb are just the same although table eto_charsel is different to it at the end of the function module.
Is it possible that this is buffered?
Regards,
Mathias