Why is there a keyboard event in the editor interface instead of a mouse wheel

[O.o1 (wlovoO.o)]

	for (const FInputAxisKeyMapping& Mapping : InputSettings->GetAxisMappings())
	{
		if (Mapping.AxisName == "CusMouseWheel")
		{
			bMouseWheel = true;
			break;
		}
	}
	if (bMouseWheel)
	{
		UE_LOG(LogTemp, Warning, TEXT("CusMouseWheel已存在！"));
	}
	else
	{
		AxisMapping.AxisName = "CusMouseWheel";
		AxisMapping.Key = FKey("Mouse Wheel Axis");
		InputSettings->AddAxisMapping(AxisMapping);
		InputSettings->SaveKeyMappings();
		UE_LOG(LogTemp, Warning, TEXT("CusMouseWheel添加成功！"));
	}

[O.o1 (wlovoO.o)]

This is not recognized as a mouse axis mapping

[O.o1 (wlovoO.o)]

Change to MouseX or MouseY, which can be identified as a mouse axis mapping