Infopath Change a field in a one instance of repeating table

Hi,
If you like to change a field in one instance of the repeating table, please follow the link:

http://blogs.catapultsystems.com/sboldt/archive/2009/08/10/get-current-row-value-from-an-infopath-repeating-table.aspx

Basically you just need to use sender e.Site.CreateNavigator() method.
then use .MoveParent() method to access the current instance
Then use SelectSingleNode with "my:FIELDNAME" parameter.