Receiver File Adapter - File Content Conversion Problem

I am using file content conversion for the first time, using a very simple example to try to get working.

I read the file in okay, a CSV file and try to write out, via FTP a flat file.

The payload I can see is :

<?xml version="1.0" encoding="utf-8" ?>

<ns:MT_EXCEL xmlns:ns="http://hillarys.co.uk/TEST">

<Worksheet>

  <Row>

   <Column1>Col1</Column1>

   <Column2>Col2</Column2>

  </Row>

  <Row>

   <Column1>R1C1</Column1>

   <Column2>R1C2</Column2>

  </Row>

</Worksheet>

</ns:MT_EXCEL>

On the File content converson I have

Recordset Structure      Row

Row.fieldNames            Column1, Column2

Row.fieldFixedLengths 10,10

Row.addHeaderLine     0

the output is just one line

Col1       R1C1

It seems to be not picking up the second column.

What am I doing wrong ?

Thanks

Paul