test

application/em/model/Em.php

@@ -62,6 +62,7 @@ class Em extends Base
             $ue = new Useage();
             $ue->last_date = $em->init_date;
             $ue->last_sum_numb = $em->init_numb ?: 0;
+            $ue->amount = '';
         } else {
             if($curr == false){
                 $ue->last_sum_numb = $ue->current_sum_numb;