I was imagining a reusable message for date range fields. In my Messages, I'd have a record with a Key value of 'Date range - before' and Message value of "{0} must be before {1}."

Then, in my Client Scripts, I could do something like this:

var msgArray = [];


msgArray.push(g_form.getLabelOf('start_date'));


msgArray.push(g_form.getLabelOf('end_date'));




alert(getMessage('Date range - before', msgArray)); //...except the second parameter isn't accepted