diff --git a/Campofinale/Packets/Cs/HandleCsSceneSetLevelScriptActive.cs b/Campofinale/Packets/Cs/HandleCsSceneSetLevelScriptActive.cs
index 73ed6b9..76ff9e7 100644
--- a/Campofinale/Packets/Cs/HandleCsSceneSetLevelScriptActive.cs
+++ b/Campofinale/Packets/Cs/HandleCsSceneSetLevelScriptActive.cs
@@ -144,6 +144,7 @@ namespace Campofinale.Packets.Cs
                     break;
                 case ScriptActionType.AddMission:
                     player.missionSystem.AddMission(action.valueStr[0],MissionState.Processing,true);
+                    if(action.valueUlong !=null)
                     if(action.valueUlong.Length > 0)
                     {
                         
diff --git a/Campofinale/Resource/Json/LevelScriptEvent.cs b/Campofinale/Resource/Json/LevelScriptEvent.cs
index ef6832c..ff628c8 100644
--- a/Campofinale/Resource/Json/LevelScriptEvent.cs
+++ b/Campofinale/Resource/Json/LevelScriptEvent.cs
@@ -15,8 +15,8 @@ namespace Campofinale.Resource.Json
     public class ScriptAction
     {
         public ScriptActionType action;
-        public string[] valueStr;
-        public ulong[] valueUlong;
+        public string[] valueStr = new string[0];
+        public ulong[] valueUlong = new ulong[0];
     }
     public enum ScriptActionType
     {