problem whit FTP receiver adapter

Hello..

i have a very strange problem.

I created 2 similar interface Idoc-XI-File (via FTP) whit file content conversion.

I configured in both cases the comunication channel but only in one case work correctly.

The second channel create the file but just whit the first field.

I check all monitor. the configuration is correct (field name and lenght). the messages in adapter monitor is:

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

- http://sabaf.it/edi">

- <ROW>

- <POSITION>

<TIPO_RECORD>CA</TIPO_RECORD>

<NUMERO_BOLLA>1111111111</NUMERO_BOLLA>

<DATA_BOLLA>20080611</DATA_BOLLA>

<CODICE_AA>M0</CODICE_AA>

<CODICE_AB>MA</CODICE_AB>

<CODICE_AC>DT</CODICE_AC>

<CODICE_AD>SA</CODICE_AD> .....

but the result file is:

CACA

Configuration of content conversion in adapter is:

POSITION.fieldNames TIPO_RECORD,NUMERO_BOLLA,DATA_BOLLA,CODICE_AA,CODICE_AB,CODICE_AC,CODICE_AD

POSITION.fieldFixedLengths 2,10,8,2,2,2,2

any suggestion?