Calling Powershell function with commas

repeatChar.powershell.function.eitherOr.ps1

[string] $title;
[char]   $ch;
[int]    $len=0;
[string] $filler = "";
[boolean] $bCallFunctionWithComma = $false;

function repeatChar([char] $ch,[int] $n)
{

   [String] $str = "";
   
   $str = [String]::new( $ch, $n);
    
   return ( $str); 
     
}

$ch = '=';

$title = 'Head of the class';

$len = $title.length;

$bCallFunctionWithComma = $true;
#$bCallFunctionWithComma = $false;

if ($bCallFunctionWithComma -eq $true)
{
    
    $filler = repeatChar( $ch, $len);

}
else
{
    
    $filler = repeatChar -ch $ch -n $len;

}

Write-Host $title;
Write-Host $filler;