From 6b12ed2a8d17caa53057b77648d87ecf5e8c5439 Mon Sep 17 00:00:00 2001
From: Michal Nehrajsa <miso@slovista.sk>
Date: Wed, 11 Feb 2026 09:46:25 +0100
Subject: [PATCH] [Fix] ArgumentNullException: Value cannot be null. Parameter
 name: unityObject

sometimes, "this" is null due to corrupt/invalid serialized data or the object got destroyed earlier.
---
 Runtime/Scripts/Variables/DashVariablesController.cs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Runtime/Scripts/Variables/DashVariablesController.cs b/Runtime/Scripts/Variables/DashVariablesController.cs
index b00ecfa7..360253c7 100644
--- a/Runtime/Scripts/Variables/DashVariablesController.cs
+++ b/Runtime/Scripts/Variables/DashVariablesController.cs
@@ -87,6 +87,11 @@ public void SetVariable<T>(string p_name, T p_value)
         
         void ISerializationCallbackReceiver.OnAfterDeserialize()
         {
+            if (this.SafeIsUnityNull())
+            {
+                return;
+            }
+            
             // Debug.Log("OnAfterDeserialize: "+_serializedVariables);
             using (var cachedContext = Cache<DeserializationContext>.Claim())
             {
@@ -115,6 +120,10 @@ void ISerializationCallbackReceiver.OnAfterDeserialize()
         void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
             // Debug.Log("OnBeforeSerialize");
+            if (this.SafeIsUnityNull())
+            {
+                return;
+            }
             
             using (var cachedContext = Cache<SerializationContext>.Claim())
             {
@@ -146,4 +155,4 @@ public void MarkDirty()
             #endif
         }
     }
-}
\ No newline at end of file
+}