SIOC digits

Hi together,

currently I build the FCU and EFIS.

I would like to shorten the QNH digits. That means normal there is 1013 and I would like only show 013 (without starting 1).
Is that possible to realise with SIOC?

I think I must change nr. of Digits to 3. And then First digit nr. for example 12 the 3rd and 4th are automaticly 13 and 14 isn´t it?

Thanks.

Niklas