Setting a global PowerShell variable from a function where the global variable name is a variable passed to the function

Question

I need to set a global variable from a function and am not quite sure how to do it.

# Set variables
$global:var1
$global:var2
$global:var3

function foo ($a,         


        

Answer 1

I ran across this question while troubleshooting my own code.

So this does NOT work...

$myLogText = ""
function AddLog ($Message)
{
    $myLogText += ($Message)
}
AddLog ("Hello")
Write-Host $myLogText

This APPEARS to work, but only in the PowerShell ISE:

$myLogText = ""
function AddLog ($Message)
{
    $global:myLogText += ($Message)
}
AddLog ("Hello")
Write-Host $myLogText

This is actually what works in both ISE and command line:

$global:myLogText = ""
function AddLog ($Message)
{
    $global:myLogText += ($Message)
}
AddLog ("Hello")
Write-Host $global:myLogText