def find(event_id)
      event = Event.get("/eventlist",:query =>{"id" => @@id , "account" => @@account, "event_id" => event_id })
      event_sales=Event.get("/eventsales",:query =>{"id" => @@id , "account" => @@account, "event_id" => event_id })
      @attributes = event.parsed_response["document"]["event"]
      return self
    end
def find(event_id)
      event = Event.get("/eventlist",:query =>{"id" => @@id , "account" => @@account, "event_id" => event_id })
      event_sales=Event.get("/eventsales",:query =>{"id" => @@id , "account" => @@account, "event_id" => event_id })
      @attributes = event.parsed_response["document"]["event"]
      return self
    end
This method get an event from brownpapersticker.
 The event should belong to the account.
 @param [String] envent_id this is id of the event I want to find