I'm trying to zip all the files in a single directory to a different folder as part of a simple backup routine.

The code runs ok but doesn't produce a zip file:

$srcdir = "H:\Backup"
$filename = "test.zip"
$destpath = "K:\"

$zip_file = (new-object -com shell.application).namespace($destpath + "\"+ $filename)
$destination = (new-object -com shell.application).namespace($destpath)

$files = Get-ChildItem -Path $srcdir

foreach ($file in $files) 
{
    $file.FullName;
    if ($file.Attributes -cne "Directory")
    {
        $destination.CopyHere($file, 0x14);
    }
}

Any ideas where I'm going wrong?