Non-one increment in auto-increment field

[iioi]

Please, how to make sequence 1,3,5,7,9 in auto-increment field ?

[yuri]

If you have advanced pack.

1. Create a regular auto-increment field. Name it numberInternal.
2. Create a regular Integer field. Make it read-only. Name it number.
3. In a workflow 'update target record' action write a formula script:

number = numberInternal * 2 - 1;

If you don't have the advanced pack, you can create a Hook, but it requires more coding.

[iioi]

I've got the idea, thanks