Power Shell Command Change Domain Account Password

$tgtDomain = "tw.XXXnet.org"
$tgtUserName = "user_account"


$oldPassword = ConvertTo-SecureString -AsPlainText "abc123" -Force
$newPassword = ConvertTo-SecureString -AsPlainText "123abc" -Force

Set-ADAccountPassword -Server $tgtDomain -Identity $tgtUserName -OldPassword  $oldPassword -NewPassword $newPassword