It should, though I am not positive about the field name of the Sender email address (I guessed origemail because that is what it is in other Email Scripts) but also, in these condition scripts, you don't return the answer but set the magic variable "answer" to whether or not you want to allow the email past your filter.

Additionally, you'll probably want to add to this list in the future, so you should write for that eventuality now, as opposed to later.

Try this:

// add to this list as necessary

var filters = [

  /asia$/i

];

var answer = true; // allow email

// this field could be different

var field_to_check = email.origemail;

for (var i = 0; i < filters.length; i++) {

  if (filters[i].match(field_to_check)) {

      // we hit a filter, mark the answer as FALSE

      // to disallow this email from going past

      answer = false;

  }

}

Best of luck,

Andy