Update a record from a file.

     BOOL fOK;
     int  iSession;
 
     fOK = LceSetFieldValue(iSession, "SALARY", "25000");
     fOK = LceSetFieldValue(iSession, "SURNAME", "Buckley");
     fOK = LceSetFieldValue(iSession, "EMPNO", "12345");
 
     fOK = LceUpdate(iSession, "SURNAME, SALARY", "PSLMST", "EMPNO", FALSE);