diff --git a/src/ScriptResolving/AngelScript/AngelScriptScript.cpp b/src/ScriptResolving/AngelScript/AngelScriptScript.cpp
index 4f16fe2..d03ef5d 100644
--- a/src/ScriptResolving/AngelScript/AngelScriptScript.cpp
+++ b/src/ScriptResolving/AngelScript/AngelScriptScript.cpp
@@ -342,11 +342,13 @@ CreatureLib::Battling::BattleScript* AngelScriptScript::Clone(const ArbUt::Optio
 
     return new AngelScriptScript(owner, GetAngelscriptOwner()->GetType(), _resolver, _type, obj, _ctxPool);
 }
-void AngelScriptScript::OnDamage(CreatureLib::Battling::Creature* creature,
-                                 CreatureLib::Battling::DamageSource source) {
+void AngelScriptScript::OnDamage(CreatureLib::Battling::Creature* creature, CreatureLib::Battling::DamageSource source,
+                                 [[maybe_unused]] u32 oldHealth, [[maybe_unused]] u32 newHealth) {
     CALL_HOOK(OnDamage, {
         ctx->SetArgObject(0, (void*)creature);
         ctx->SetArgDWord(1, (i32)source);
+        ctx->SetArgDWord(2, oldHealth);
+        ctx->SetArgDWord(3, newHealth);
     })
 }
 void AngelScriptScript::OnFaint(CreatureLib::Battling::Creature* creature, CreatureLib::Battling::DamageSource source) {
diff --git a/src/ScriptResolving/AngelScript/AngelScriptScript.hpp b/src/ScriptResolving/AngelScript/AngelScriptScript.hpp
index 6f6e5f8..db2ca77 100644
--- a/src/ScriptResolving/AngelScript/AngelScriptScript.hpp
+++ b/src/ScriptResolving/AngelScript/AngelScriptScript.hpp
@@ -75,15 +75,15 @@ public:
                           uint8_t hitNumber, uint8_t* outType) override;
 
     void BlockCritical(CreatureLib::Battling::ExecutingAttack* attack, CreatureLib::Battling::Creature* target,
-                             uint8_t hitNumber, bool* blockCritical) override;
+                       uint8_t hitNumber, bool* blockCritical) override;
     void ChangeEffectiveness(CreatureLib::Battling::ExecutingAttack* attack, CreatureLib::Battling::Creature* target,
                              uint8_t hitNumber, float* effectiveness) override;
 
     void PreventSecondaryEffects(const CreatureLib::Battling::ExecutingAttack* attack,
                                  CreatureLib::Battling::Creature* target, uint8_t hitNumber, bool* outResult) override;
 
-    void OnIncomingHit(const CreatureLib::Battling::ExecutingAttack* attack,
-                           CreatureLib::Battling::Creature* target, uint8_t hitNumber) override;
+    void OnIncomingHit(const CreatureLib::Battling::ExecutingAttack* attack, CreatureLib::Battling::Creature* target,
+                       uint8_t hitNumber) override;
     void OnFaintingOpponent(const CreatureLib::Battling::ExecutingAttack* attack,
                             CreatureLib::Battling::Creature* target, u8 hitNumber) override;
     void OnSecondaryEffect(const CreatureLib::Battling::ExecutingAttack* attack,
@@ -124,7 +124,8 @@ public:
     void PreventOpponentRunAway(const CreatureLib::Battling::FleeTurnChoice* choice, bool* result) override;
     void PreventOpponentSwitch(const CreatureLib::Battling::SwitchTurnChoice* choice, bool* outResult) override;
     void OnEndTurn() override;
-    void OnDamage(CreatureLib::Battling::Creature* creature, CreatureLib::Battling::DamageSource source) override;
+    void OnDamage(CreatureLib::Battling::Creature* creature, CreatureLib::Battling::DamageSource source,
+                  [[maybe_unused]] u32 oldHealth, [[maybe_unused]] u32 newHealth) override;
     void OnFaint(CreatureLib::Battling::Creature* creature, CreatureLib::Battling::DamageSource source) override;
     void OnSwitchIn(CreatureLib::Battling::Creature* creature) override;
 
diff --git a/src/ScriptResolving/AngelScript/AngelScriptTypeInfo.hpp b/src/ScriptResolving/AngelScript/AngelScriptTypeInfo.hpp
index fbaef51..3e2924a 100644
--- a/src/ScriptResolving/AngelScript/AngelScriptTypeInfo.hpp
+++ b/src/ScriptResolving/AngelScript/AngelScriptTypeInfo.hpp
@@ -170,7 +170,8 @@ public:
     SCRIPT_HOOK_FUNCTION(PreventOpponentSwitch, "void PreventOpponentSwitch(SwitchTurnChoice@ choice, bool& result)");
 
     SCRIPT_HOOK_FUNCTION(OnEndTurn, "void OnEndTurn()");
-    SCRIPT_HOOK_FUNCTION(OnDamage, "void OnDamage(Pokemon@ pokemon, DamageSource damageSource)");
+    SCRIPT_HOOK_FUNCTION(OnDamage,
+                         "void OnDamage(Pokemon@ pokemon, DamageSource damageSource, uint oldHealth, uint newHealth)");
     SCRIPT_HOOK_FUNCTION(OnFaint, "void OnFaint(Pokemon@ pokemon, DamageSource damageSource)");
     SCRIPT_HOOK_FUNCTION(BlockWeather, "void BlockWeather(Battle@ battle, bool& result)");
     SCRIPT_HOOK_FUNCTION(OnSwitchIn, "void OnSwitchIn(Pokemon@ pokemon)");
diff --git a/src/ScriptResolving/AngelScript/TypeRegistry/BasicScriptClass.cpp b/src/ScriptResolving/AngelScript/TypeRegistry/BasicScriptClass.cpp
index 159674c..2cb1cab 100644
--- a/src/ScriptResolving/AngelScript/TypeRegistry/BasicScriptClass.cpp
+++ b/src/ScriptResolving/AngelScript/TypeRegistry/BasicScriptClass.cpp
@@ -54,7 +54,7 @@ shared abstract class PkmnScript {
     void PreventOpponentRunAway(FleeTurnChoice@ choice, bool& result){};
     void PreventOpponentSwitch(SwitchTurnChoice@ choice, bool& result){};
     void OnEndTurn(){};
-    void OnDamage(Pokemon@ pokemon, DamageSource damageSource){};
+    void OnDamage(Pokemon@ pokemon, DamageSource damageSource, uint oldHealth, uint newHealth){};
     void OnFaint(Pokemon@ pokemon, DamageSource damageSource){};
 
     // PkmnLib methods