Problem with output

CallerScript.cmd

@ECHO OFF

:: Use PS to split env PATH into separated pathelements
:: Run test in Vim    :!%:p:h:8/%:r.%:e
POWERshell -File .\Tighties.ps1

:EOF

Tighties.ps1

$MethodDefinition = @'
[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
public static extern int GetShortPathName(string LongPath, string ShortPath, int Buflen);
'@

$Kernel32 = Add-Type -MemberDefinition $MethodDefinition -Name 'Kernel32' -Namespace 'Win32' -PassThru

$oi = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
foreach ($pt in $Env:PATH.split(';')) {
   $snap = $Kernel32::GetShortPathName("$pt" , $oi, 9056)
   write-host "Pathname $oi"
   $oi = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
}


# This script is called from a CMD batch file --