Hey @Daniel-Miller and @george1421 thanks again for your effort in helping me figure this out. I think the complexity (for me) for what I was about to do scared me into thinking of a roundabout approach to solving this issue. I think I found a better solution than what I was originally trying to do (and WAY simpler). I will post here in case this will be of use for anyone in the future.
Rather than appending a date to the hostname so I can change the computer name I decided to start out with the date appended to the hostname so that renaming the computer would be exactly how I want it to be then for my other requirements (adding the user to be admin of the computer) I simply removed the date from the hostname to come up with the username.
Basically, if my username is bobsmith and today’s date is 2019-12-06, I will name the host:
bobsmith191206 then in my Powershell script I just need to set
$userName = $env:computername -replace '[0-9]' then the hostname remains
bobsmith191206 and now I have a variable
$userName that now equals
Anyhow, that is one of those… so easy it is dumb solutions. Not sure why I didn’t think of it earlier. Thanks again you guys for helping me to think outside of the box I stuck myself in.