Menambahkan parameter pada ajax request

Ext.Ajax.request({
 url: 'technical_support/wo_jakarta/save',
 async:true,
 params: {
  srv_req_id     :  ticket,
  employee_id    :  assign_to,
  
 },
 success: function(response){
  obj = Ext.JSON.decode(response.responseText); 
         
  Ext.Msg.alert('Information!', obj.message);
  Ext.getBody().unmask();

 }
});