Hello Franck, thnx for your response.

What i actually want to achieve is, when a user opens the form, he/she sees
those 3 records with their "personnel cost" and "Other Cost" (it is displayed
in a repeating table which is bound to a datasource). They can than change
the these values. When doing so, the total must than be recalculated. Than
the user can store the new values in the database. I do have a "Total Cost"
field in my schema, but did not use it because i don't know how to do a sum
per record and write it to that field.
I wanted to add an on_afterchange event behind the "Personnel Cost" and
"Other Cost", so that when the value changes it should recalculate the total.
But that would bring me to my next question, how do i loop thgrough the
table, and is it possible to retrieve the current selected record out of the
table so i only have to update that one record and not the whole table.
I have tried the code you posted in one of the other postings:

IXMLDOMNodeList oNodeList = thisXDocument.DOM.selectNodes("<what goes in
here?>" );
           
for (int i = 0;i<oNodeList.length;i++)
{
  msg.ShowMessage(oNodeList[i].text);
}

I have problem with the "<what goes in here?>" part. I keep getting a length
of 0.

Thnx,
Stanley