Select field storing 2 values

Hi there, i have a fairly short question: Is it possible to store 2 values with a select field instead of one?

The reason: i am building a site that is very connected throughout the pages, and as a safety measure, i use autoid to create solid, unchangable md5 hashes to keep the pages in touch.
but: i am not sure how performative this solution is and would like to also store the relative path just in case. is there a possible way to archive that? it needs to be tied to a select field that sits in a structure field. whenever i choose a certain page (via dynamic options) i would like to store the autoid and the path.