Hi Jeff,

There is a solution for unique incremental ID requirement in the latest 
version of Enterprise Scalr, but Open Source Scalr has a similar Global 
Variable named SCALR_INSTANCE_FARM_INDEX that may fit this use case.  
Documentation available here 
This will provide an incremental value for the index of the instance within 
the Farm, but the index may be reused when an instance is replaced.  Let us 
know if you have any questions.

Many thanks,
Wm. Marc O'Brien
Scalr Technical Support

On Wednesday, October 12, 2016 at 11:23:33 AM UTC-6, Jeff Gojkovich wrote:
> Hello,
> I was wondering if there is a built in variable that auto increments so 
> that I can use it in the hostname field.
> For example the first instance is created, the variable would be 1 or 01. 
>  Second instance 02.  Then 01 gets shutdown and a third is launched it 
> would be 03, etc.
> --
> Jeff

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