diff --git a/webapp/controller/TeamController.class.php b/webapp/controller/TeamController.class.php
index e1a805c2..afb6d296 100644
--- a/webapp/controller/TeamController.class.php
+++ b/webapp/controller/TeamController.class.php
@@ -252,6 +252,7 @@ class TeamController extends BaseAuthedController {
     public function openSlot()
     {
         $teamUuid = getReqVal('team_uuid', '');
+        $slotNum = getReqVal('slot_num', 1);
         $r = $this->_getRedis($teamUuid);
         $teamDb = $this->readTeamDb($r, $teamUuid);
         if (empty($teamDb)) {
@@ -264,11 +265,11 @@ class TeamController extends BaseAuthedController {
                 return;
             }
         }
-        if ($teamDb['slot_num'] >= 4){
-            $this->_rspErr(1, 'Maximum size of team');
-            return;
-        }
-        $teamDb['slot_num']+=1;
+//        if ($teamDb['slot_num'] >= 4){
+//            $this->_rspErr(1, 'Maximum size of team');
+//            return;
+//        }
+        $teamDb['slot_num'] = $slotNum;
         $this->saveTeamDb($r, $teamUuid, $teamDb);
         $this->_rspOk();
     }