Hello, For example, in your script you must set a conditional: if difference 0, then exit with status CRITICAL. <div class="gmail_quote">On 7 October 2011 13:46, Metron 6 (six) <<a href="mailto:metron6@gmail.com">metron6@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">hello, i have a script to check a microsoft sql server. script runs every hour and checks if there are any new records. output of the script is like this: 400 added since last time 60' ago (33716 - 33316) Participants an hour ago: 33316 Participants now: 33716 Difference: 400 i want to add it, and if the difference is 0, to send notifications... but i dont know how... can anyone help me ? rgds, george -- regards, Metron 6 (six) <a href="mailto:Metron6@gmail.com">Metron6@gmail.com</a> ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. <a href="http://p.sf.net/sfu/splunk-d2dcopy2" target="_blank">http://p.sf.net/sfu/splunk-d2dcopy2</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div> -- Kirill