How to customize Step on Number input

[JuniorBragaJ]

I want to make step 5 to 5 number using updown, but i can't. The only way i found was using "multipleOf", but using this, it generate an error if the number isn't multiple by 5 for example. I just want to make the updown input to inchement or decrement by 5 or whatever. It's possible to do that?