yes. you need to enable the broadcast plugin in eventghost.
then you can copy and paste this macro into your Eventghost configuration tree
<?xml version="1.0" encoding="UTF-8" ?>
<EventGhost Version="1486">
<Macro Name="Broadcaster: Broadcast: event" Expanded="True">
<Action>
BroadcastListener.Broadcast(u'event', u'eventName&&payload1&&payload2', 33000)
</Action>
</Macro>
</EventGhost>
then modify the eventName and payload as you wish, and trigger it as you see fit in eventghost (either with a button press or whatever).