Integrate WAD and VC

Question

Dear All,
Since visual composer has only limited hierarchy support, i've implemented a WAD hierarchy dialog within VC as described in the following How To..
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/5a40f2f7-0c01-0010-d69f-c6317c5165cd
Instead of directly filtering the table, I would like to use the output of the hierarchy dialog in an input form. The hierarchy dialog then functions as a value help for the input form. The problem is that I only get the 'undefined' value in the input form even after I have selected a hierarchy node.
Writing the hierarchy dialog output directly to a table shows the 'undefined' value plus the selected hierarchy node. It seems that the output is in the form of a list.
Any idea how I can only output the selected hierarchy node to the input form ?
Thanks
Thomas

Answer 1

Hi Prakash,
I have changed my query to use a single type variable for calendar month. I still can't get it to work. If I use output @KEY as specified in your how to, I get an error message that the variable has the wrong format. If I change it to @KEY_EXT, it doesn't give me the error, but it also doesn't filter.
The source of the webtemplate in visual composer is as follows if I select 11.2006:
  <VARIABLES>
    <VARIABLE name="VAR_20061115113759" type="INFO_OBJECT_MEMBER" text="Month of LAFD (Single, Opt)">
      <SELECTIONS>
        <SELECTION type="SINGLE_MEMBER">
          <MEMBER name="200611" type="MEMBER" text="11.2006"/>
        </SELECTION>
      </SELECTIONS>
    </VARIABLE>
    <VARIABLE name="VAR_20061102104721" type="INFO_OBJECT_MEMBER" text="Location Hierarchy">
      <SELECTIONS/>
    </VARIABLE>
  </VARIABLES>
The strange thing is that if I run the webtemplate stand-alone (not in visual composer) and go to the variable screen via the context menu (filter->variable screen) and select 11.2006 the query isn't filtered! The source looks exactly the same as above.
The only way the variable screen works is by force it to always show the variable screen in the webtemplate. This was the query is filtered and the code looks as follows:
  <VARIABLES>
    <VARIABLE name="VAR_20061115113759" type="INFO_OBJECT_MEMBER" text="Month of LAFD (Single, Opt)">
      <SELECTIONS>
        <SELECTION type="SINGLE_MEMBER">
          <MEMBER name="200611" type="MEMBER" text="11.2006"/>
        </SELECTION>
      </SELECTIONS>
    </VARIABLE>
    <VARIABLE name="VAR_20061102104721" type="INFO_OBJECT_MEMBER" text="Location Hierarchy">
      <SELECTIONS/>
    </VARIABLE>
  </VARIABLES>
  <SELECTION_SPACE>
    <SELECTION type="CARTESIAN_PRODUCT">
      <CHARACTERISTICS/>
    </SELECTION>
  </SELECTION_SPACE>
  <SELECTION_STATE>
    <SELECTION type="CARTESIAN_PRODUCT">
      <CHARACTERISTICS>
        <CHARACTERISTIC name="0CALMONTH">
          <SELECTIONS>
            <SELECTION type="SINGLE_MEMBER">
              <MEMBER name="200611" type="MEMBER" text="11.2006"/>
            </SELECTION>
          </SELECTIONS>
        </CHARACTERISTIC>
The last part where it actually filters 0CALMONTH is added. This is missing in all the other examples above, any ideas ?
Thanks a lot,
Thomas