Setting device status to down

New user of Resource Manager 4.2.5

We have several devices that are set to ignore PING.

When modeling fails, these devices show DEVICE STATUS of UP and green.

For the purposes of new installs, I would like an un-modeled, un-pingable device to show as down

For modeled servers, there will be other command failures I will want to show as down

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I wrote my first event transform which successfully changes the severity = "5" and the event class to "/Status/Ping"
This does not set the device status to RED / DOWN .

if evt.message.find("User timeout caused connection failure") >= 0:
evt.severity = 5
evt.eventClass = "/Status/Ping"
evt.eventClassKey = "SSH Modeling command timeout - on non-pingable device"

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Is there a better way to do this than event transform

Does my transform just need tweaking