$(function() {
  var CountPropertySource = "current_rating";
  var AreaPropertySource = "current_rating";
  $("#tglSendValue").click(function(e) {
    if ($("#sendvalue").val() == "current") {
      $("#sendvalue").val("potential");
      CountPropertySource = "potential_rating";
    } else {
      $("#sendvalue").val("current");
      CountPropertySource = "current_rating";
    }
    alert(CountPropertySource);
  });
});