Esx_ambulancejob /revive command does not exist

Im using the Esx_ambulancejob job, But There there is no /revive command for admins, When i try to use /revive, The command does not exist? Does anyone know why?

I had the same error, the problem with us was that the job was simply too old. We were advised to use the new esx_ambulance job where revive works normally.