Sometimes you only know at runtime in which variable a certain value is stored. Let me clarify with an example:

$tim = 30;$evy = 24;
$name = Read-Host "Enter your name";  In essence, if$name equals tim we want to use $tim and if$name equals evy we want to use $evy. This can be achieved with Get-Variable: $age = Get-Variable $name -valueOnly; Write-Host "Your age is$age";