F98MODAT Dowload File - JDE 9.2

Hi,
I trying create business function to dowload file (PDF) from F98MODAT, I can download file in the directory but I think decoding is not correct. Somebody knows?

jdeBufferUncompress((BYTE **)&pData, &nDataSize, (const BYTE *)dsF98MODAT.zutxft.lpValue, dsF98MODAT.zutxft.lSize);
jdeStrncpy(szFileName, (const JCHAR *)lpDS->szPathTo, DIM(szFileName) - 1);
stream = jdeFopen(szFileName, _J("w"));
jdeFwriteConvert(lpBhvrCom, (JCHAR *)dsF98MODAT.zutxft.lpValue, sizeof(JCHAR), dsF98MODAT.zutxft.lSize, stream);
jdeFclose(stream);