LoadBatchActions to Populate a Matrix

Question

We have managed to work out some XML that can be passed to LoadBatchActions to populate a matrix in a single call (With performance being the goal), however it doesn't seem possible to populate combo box columns using this mechanism.  Is there a way to populate combo box matrix cells with data using LoadBatchActions?  What we have so far is something like this, but the LnType2 column is causing the operation to fail because it is a combo box column:
<?xml version="1.0" encoding="UTF-16"?>
<Application>
  <forms>
    <action type="update">
      <form appformnumber="2000071350" uid="FSE_0000000">
        <items>
          <action type="update">
            <Item uid="Matrix">
              <Specific>
                <rows>
                  <action type="add">
                    <row index="0" />
                    <row index="0" />
                  </action>
                  <action type="update">
                    <row index="1">
                      <column uid="Um2" string="EA" />
                      <column uid="LnType2" string="P" />
                    </row>
                    <row index="2">
                      <column uid="Um2" string="EA" />
                      <column uid="LnType2" string="P" />
                    </row>
                </rows>
              </Specific>
            </Item>
          </action>
        </items>
      </form>
    </action>
  </forms>
</Application>

Answer 1

Hi Benjamin,
In the Business One UI API 2004 help file you could find an issue named "Adding Forms with XML" where it is explained the file format.
Moreless, you should use the valid values property under ItemSpecific tag to set the possible options, and then add some datasources to link the controls on the matrix with the tables in the DB.
Regards
Ibai Peñ