Variable names with random numbers

I want to declare variables with random numbers in the name, such as

$var123 = "A"
$var456 = "B"
$var789 = "C"

by using Get-Random for the number part.

What have I to write behind $var if $rnd = Get-Random? Or is there another way to declare such variables?

Update: The real use case is that I have trouble with Add-Type and hoped I could solve it with this workaround. But it still does not work as expected. It works for the very first time, but after changing the C# code, it still shows the old code.

Any suggestions? I am running PowerShell 7.2.1 on a Mac computer.

$rnd = Get-Random
$code =
@"
    using System;
    namespace HelloWorld {
        public class Program {
            public static int Main() {
                #return 123; # first try, working well
                return 456; # after changing, still returns 123
            }
        }
    }
"@

New-Variable -Name "var$rnd" -value $code
Add-Type -TypeDefinition (Get-Variable -Name "var$rnd" -ValueOnly) -Language CSharp 
Write-Host (Invoke-Expression "[HelloWorld.Program]::Main()")

>Solution :

You would need to use New-Variable or Set-Variable if you want to dynamically create them with random names:

'A', 'B', 'C' | ForEach-Object {
    do {
        $varname = "var$(Get-Random -Minimum 100 -Maximum 1000)"
    } until($varname -notin (Get-Variable var*).Name)
    New-Variable -Name $varname -Value $_
}

Get-Variable var*

Worth noting that, using above method will make an infinite loop if you create 901 variables with it. -Minimum and -Maximum should be tweaked if more variables are needed.