Jquery and statment fails in condition

I am trying to validate a form and to do that i have set a condition where 2 dropdowns need the indicated value. however when i try it out the condition only happens when i select the oposite value of the second dropdown and even when i fullfill the condition it wont send out the form.

here is my validation

                 if (($("#ddlTipoViat").val() == "Internacional") && ($("#ddlTipoCom").val() == "Con viáticos")) {
                     var exp = new type('not [0]');
                     if (exp.test($("#ddlPais").val())) {
                         return true;
                     }
                     else {
                         return false;
                     }
                 }

             };

i call it from here

                 Pais: {
                     identifier: 'ddlPais',
                     rules: [{
                         type: 'paisTipoA',
                         prompt: 'Debe haber un Pais'
                     }]
                 },

I would really appreasite some help here because i dont know why the $$ does not work