Extend naming pattern using a token

Hello community. I need to extend my naming pattern, where we use the token as follows:

PCNAME{n:fixed=2}

This creates computers in the domain with following names:

PCNAME01; PCNAME02

And gives a maximum of 99 computer.

I need to extend the fixed=2 to fixed=3 so I can create more than 99 VDIs.

I was searching google for quite some time and never found this case.

My question is: If I simply increse the fixed=2 to fixed=3 - will existing machines be renamed to PCNAME001; PCNAME002?

My goal is to not have the existing machines changed, just be able to provision machines further: PCNAME100; PCNAME101 etc.

Can somebody advise me how to perform this based on best practices, as I was really not able to find anything in the knowledge articles.

Thanks in advance.