Accessing array outside of a PS function - powershell

Question

I am having a hard time figuring out how to get the PSCustomObject/array out of the function. I have tried using $Global:ZipList as well as just passing the variables into an array directly w/o a custom object but no luck. The reason I need this, is I need to then loop through the array/list after I get the filenames and then was going to loop through this list and unzip each file and log it and process it based on the extension in the zip; this is to be used for multiple zips, so I can't predetermine the file extensions without grabbing the filenames in the zip into a list. I would just use a shell however some of the zips are password protected, haven't figured out how to pass a password scripted to the shell com unzip windows feature so stuck with 7z for now. Any help would be greatly appreciated! Thanks
Function ReadZipFile([string]$ZipFileName)
{
[string[]]$ReadZipFile = & 'C:\Program Files\7-Zip\7z.exe' l "$ZipFileName"
[bool]$separatorFound = $false
#$ZipList = #()
$ReadZipFile | ForEach-Object{
if ($_.StartsWith("------------------- ----- ------------ ------------"))
{
if ($separatorFound)
{
BREAK # Second separator; We're done!
}
$separatorFound = -not $separatorFound
}
else
{
if ($separatorFound)
{
[DateTime]$FileCreatedDate = [DateTime]::ParseExact($_.Substring(0, 19),"yyyy'-'MM'-'dd HH':'mm':'ss", [CultureInfo]::InvariantCulture)
[Int]$FileSize = [Int]"0$($_.Substring(26, 12).Trim())"
$ZipFileName = $_.Substring(53).TrimEnd()
$ZipList = [PSCustomObject] #{
ZipFileName=$ZipFileName
FileCreatedDate=$FileCreatedDate
FileSize=$FileSize}
}
}
}
}
$z = ReadZipFile $ZipFileName
$ZipList | Select-Object ZipFileName
To be able to select from array created in the function outside of it. I believe my if statements may be blocking the global variable feature when i tried using global: