Converting $matches to PSCustomObject - regex

Question

I had created this function to attempt to break strings into groups of tokens that can be made into PowerShell object. This is what I have so far. If I use the code outside of the function I get the desired result but if I attempt to use it within the function I get nothing. I believe the output is disappearing. I know I am not using the right terminology to describe what is happening. Any assistance would be appreciated.
Function Convert-MatchToPSCustomObject
{
<#
.SYNOPSIS
Converts $matches to PSCustomObject
.DESCRIPTION
Takes an input string and converts it to PSCustomObject
.PARAMETER Pattern
Mandatory. Pattern which to match within the string
.PARAMETER String
Mandatory. Input String
.EXAMPLE
Convert-MatchToPSCustomObject -Pattern '(?<descriptor>^\b[A-Z]{2})(?>[=])(?<value>[\w \.\-]+\b$)' -String 'CN=Only Da Best'
.LINK
https://regex101.com/r/1hYb2J/1/
.LINK
https://vexx32.github.io/2018/11/08/Named-Regex-Matches-PSCustomObject/
.NOTES
Version: 1.0
Author: Kino Mondesir
#>
[cmdletbinding()]
param
(
[Parameter(HelpMessage="Pattern to match", Position=0, Mandatory=$false, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullorEmpty()]
[string]$pattern = '(?<descriptor>^\b[A-Z]{2})(?>[=])(?<value>[\w \.\-]+\b$)',
[Parameter(HelpMessage="Input string", Position=1, Mandatory=$true, ValueFromPipeline=$true)]
[ValidateNotNullorEmpty()]
[string]$string
)
Try
{
return $string -split ',' | ForEach-Object {
if ($PSItem -match $pattern)
{
$Matches.Remove(0)
[PSCustomObject]$Matches
}
else
{
Throw "No matching items found!"
}
}
}
Catch
{
$exception = $_.Exception
Write-Error $exception.Message
return -1
}
}