if you are running server scripts (NXSL), you can use PostEvent function: https://wiki.netxms.org/wiki/NXSL:PostEvent

Another possible option is to set node's custom attribute in reaction for SYS_NODE_DOWN and create status poll hook script, which will check if node is down for certain amount of time and use PostEvent function to generate another event.

Best regards,
Victor

1. Create a custom event such as "NODE_STILL_DOWN"
2. Create a server script that runs nxevent calling NODE_STILL_DOWN.
3. Add an action to "SYS_NODE_DOWN" that runs the above server script.
4. Create a processing policy rule for NODE_STILL_DOWN that has a filter checking for 5 and 20 minute poll intervals.

Is this the best way to do this?

If so,  how can I call nxevent from a server script? (I haven't seen any examples.  I am using Windows NetXMS).  nxevent.exe is in C:\NetXMS\bin on the server.

Thanks for any help.