Wrong output in powershell

$status_message = get-HPiLoFirmwareversion -Server 172.16.2.210 -Username administrator -Password xxxx -DisableCertificateAuthentication -WarningAction SilentlyContinue | Select-Object -Property STATUS_MESSAGE


if ($status_message -eq '@{STATUS_MESSAGE=OK}'){
Write-Host "Status OK"
Exit 0
}
else {
Write-Host "error"
Exit 0
}

Write-Host $status_message

but im getting output:

@{STATUS_MESSAGE=OK}

instead of just OK

get-HPiLoFirmwareversion -Server 172.16.2.210 -Username administrator -Password xxxxx -DisableCertificateAuthentication -WarningAction SilentlyContinue

Write-Host $status_message

IP                   : 172.16.2.210
HOSTNAME             : 
STATUS_TYPE          : OK
STATUS_MESSAGE       : OK
FIRMWARE_DATE        : Sep 23 2016
FIRMWARE_VERSION     : 2.50
LICENSE_TYPE         : iLO Advanced
MANAGEMENT_PROCESSOR : iLO4

@{STATUS_MESSAGE=OK}