Detection Script for KB installed

This was in Microsoft Intune documentation and it did not work and shows as Failed

$sysinfo = systeminfo.exe
$result = $sysinfo -match KB<KB number>

if ($result)
 {
    Write-Output "Found KB<KB number>"
    exit 0
 }
 else
 {
    exit 1
 }

This is what I rewrote and have plugged it in, and still have to get the screen green or showing as installed. Is this correct?

$sysinfo = systeminfo.exe

$result = $sysinfo -match "KB5050021"

if ($result) {

    Write-Output "Found KB5050021"

    exit 0

} else {

    Write-Output "KB5050021 not found"

    exit 1

}