Can i have 3 digit product version?

When i try to make my installation with version X.X.X
!define version "2.1.0"
VIProductVersion "${version}"

i get an error:

Error: invalid VIProductVersion format, should be X.X.X.X

So, what should i do to make 3 digit product version?

Tnx in advance

add .0

Tnx, but the whole point of my question is that i wanna have 3 digit product version and i don't know is that possible or ii MUST be 4 digit?

it must be 4