Due to the complexity and setting up multiple Autoregistration actions and in some case may be repetitive or the need to make additions to certain action values. I would like to suggest adding the functionality to be able to use Macros in Autoregistration actions. Example would be:

Macro {$IP.VALIDATION} [, ]10\.(1|2|13|16|20|51|52|101|102|120|224)

Autoregistration action "Host metadata matches {$IP.VALIDATION}