I have been trying to trigger a SYS_NODE_DOWN event by checking if another Node is not down. I have implemented as per manual and various other posts, but still cannot get it to work.

I have attempted to do this by creating a situation, as per thread https://www.netxms.org/forum/configuration/node-down-config-question/, however I  want to report only if nodeB is not down (nodeB being the remote router, and NodeA is a device on the remote network).

In a previous thread, Victor stated that you should be able to see situation, instance and attribute from console https://www.netxms.org/forum/configuration/action-to-return-value/, however I can only see the situation and instance, but not the attribute - maybe this is the problem?(see attachment).

My situation created is:
Event: SYS-NODE-DOWN, Situation Name = NodeDown, situation instance = %n, Attribute: status = 1. This will create a NodeDown situation instance for each node with a status = 1 for a sys_node_down
Event: SYS-NODE-UP, Situation Name = NodeUp, situation instance = %n, Attribute: status = 0. This will create a NodeDown situation instance for each node with a status = 0 for a sys_node_up

I have setup an event process policy for a separate host that I want to report on if the router (dev2rtr) is NOT down:
My script in this event processing policy is:

// We only want to send alert if router is not down
sub main()
{
   s = FindSituation("NodeDown", "dev2rtr");
   if (s != NULL)
   {
   if (s->status == 1)
      return 0; // Don't match rule
   }
   return 1; // Match rule
}

I am using version 1.08 on a windows platform.

Appreciate any help with this,
Steve...