MAXL Script - How to pass $1 and $2

Hello,

I would like to have a MAXL Script to update the substitution variables in Hyperion Planning, but I don't want to hardcode them in the script.

I was thinking in having a file, so the customer will update the file and run a batch script.

How can I do this? How can I pass $1 and $2?

My MAXL Script:

set ApplicationName = 'XXX';

set SpoolFile = '/fcaststg/logs/SetSubstitutionVariable.log';

login admin identified by password;

iferror "ErrorHandler" ;

spool on to $SpoolFile;

iferror “ErrorHandler” ;

/* Setting the substitution variable */

alter application XXX set variable "$1" "$2";

iferror "ErrorHandler" ;

spool off;

Logout;

exit 0;

define label "ErrorHandler" ;