diff --git a/Minecraft.Client/Common/UI/UIScene.cpp b/Minecraft.Client/Common/UI/UIScene.cpp
index 303897a7..82664329 100644
--- a/Minecraft.Client/Common/UI/UIScene.cpp
+++ b/Minecraft.Client/Common/UI/UIScene.cpp
@@ -1250,7 +1250,17 @@ void UIScene::externalCallback(IggyExternalFunctionCallUTF16 * call)
 	}
 	else if(wcscmp((wchar_t *)call->function_name.string,L"handleCheckboxToggled")==0)
 	{
-		if(call->num_arguments != 2)
+		if(call->num_arguments == 2)
+		{
+			if (call->arguments[0].type == IGGY_DATATYPE_number && call->arguments[1].type == IGGY_DATATYPE_boolean)
+				return handleCheckboxToggled(call->arguments[0].number, call->arguments[1].boolval);
+		}
+		else if(call->num_arguments == 3)
+		{
+			if (call->arguments[0].type == IGGY_DATATYPE_number && call->arguments[1].type == IGGY_DATATYPE_number && call->arguments[2].type == IGGY_DATATYPE_boolean)
+				return handleCheckboxToggled(call->arguments[0].number, call->arguments[2].boolval); //call->arguments[1].number
+		}
+		else
 		{
 			app.DebugPrintf("Callback for handleCheckboxToggled did not have the correct number of arguments\n");
 #ifndef _CONTENT_PACKAGE
@@ -1258,19 +1268,26 @@ void UIScene::externalCallback(IggyExternalFunctionCallUTF16 * call)
 #endif
 			return;
 		}
-		if(call->arguments[0].type != IGGY_DATATYPE_number || call->arguments[1].type != IGGY_DATATYPE_boolean)
-		{
-			app.DebugPrintf("Arguments for handleCheckboxToggled were not of the correct type\n");
+
+		app.DebugPrintf("Arguments for handleCheckboxToggled were not of the correct type\n");
 #ifndef _CONTENT_PACKAGE
-			__debugbreak();
+		__debugbreak();
 #endif
-			return;
-		}
-		handleCheckboxToggled(call->arguments[0].number, call->arguments[1].boolval);
+		return;
 	}
 	else if(wcscmp((wchar_t *)call->function_name.string,L"handleSliderMove")==0)
 	{
-		if(call->num_arguments != 2)
+		if(call->num_arguments == 2)
+		{
+			if (call->arguments[0].type == IGGY_DATATYPE_number && call->arguments[1].type == IGGY_DATATYPE_number)
+				return handleSliderMove(call->arguments[0].number, call->arguments[1].number);
+		}
+		else if(call->num_arguments == 3)
+		{
+			if (call->arguments[0].type == IGGY_DATATYPE_number && call->arguments[1].type == IGGY_DATATYPE_number)
+				return handleSliderMove(call->arguments[0].number, call->arguments[1].number);
+		}
+		else
 		{
 			app.DebugPrintf("Callback for handleSliderMove did not have the correct number of arguments\n");
 #ifndef _CONTENT_PACKAGE
@@ -1278,15 +1295,12 @@ void UIScene::externalCallback(IggyExternalFunctionCallUTF16 * call)
 #endif
 			return;
 		}
-		if(call->arguments[0].type != IGGY_DATATYPE_number || call->arguments[1].type != IGGY_DATATYPE_number)
-		{
-			app.DebugPrintf("Arguments for handleSliderMove were not of the correct type\n");
+
+		app.DebugPrintf("Arguments for handleSliderMove were not of the correct type\n");
 #ifndef _CONTENT_PACKAGE
-			__debugbreak();
+		__debugbreak();
 #endif
-			return;
-		}
-		handleSliderMove(call->arguments[0].number, call->arguments[1].number);
+		return;
 	}
 	else if(wcscmp((wchar_t *)call->function_name.string,L"handleAnimationEnd")==0)
 	{