Yes, it was unicode

I have put 2 as the efalgs parameter in the strtofile and it's working fine now

TEXT TO lcXml NOSHOW TEXTMERGE PRETEXT 7
<>
<>
<>
<>
<>
<>
<>
<>
<>
ENDTEXT

lcXml=STRCONV(STRCONV(ALLTRIM(lcXml),1),5)
STRTOFILE(lcXml,tcFichier,2)

Thank's

Benoit