Hey There,

Another question from me (sorry for overwhelming you in here, it's just I'm doing my first project all alone)

I would like to do a field update in process builder from a custom Number field to another custom number field

I used process builder and my second line is updating (so criteria are fine) See screenshot. 

Is there something different when updating a custom number field to another custom number field ?

Do i need to use a formula ?

Both custom number fields can have up to 18 numbers, i don't understand why it;'s not updating....any idea's ?