Help with node downtime on the node up alert

Hi all,

I am having trouble reporting a Nodes downtime in the back up alert.

I am using this:

${SQL:select distinct datediff(minute,e.eventtime,getdate()) from events e where e.networknode = ${NodeID}}

But it always reports 1 minute.

I run this in Report Writer on a test node just after I bring the node back up:

select distinct datediff(minute,e.EventTime,getdate())  from events e where e.networknode=197

And it shows:

1

8

10

178

...

The number I am after is the 8 as it was down for 8 mins, but another event gets the top spot?

So, how do I select the correct event to report node downtime?