[web2py] problem with upload field

[cabildocl]

Dear I need a help regarding a problem:

I have an application in web2py, which manages a database in mysql,
and I have an upload area to upload some audio files. Need from other
applications also upload files to this table but not working. This
function uses only one sql. SQL statement used herein:

INSERT INTO trabajo(titulo, audio, responsable) VALUES('${ARG1}',
LOAD_FILE('${ARG2}'),'${ARG3}');