Afaik, following comms orders isn't an object property you set, it's a command you add to the ai stack.
<add_ai type="FOLLOW_COMMS_ORDERS" name="Goliath" />
Eric is right though, I recall having trouble trying to set object properties in the same event they're created in. You can add items to the AI stack in the same event though.
The command to add comms control is a one-way thing though, so you may have to clear the ai stack once the interaction has happened, then manually re-add whatever commands you had telling the merchants where to go.
[Last edited Mar 22, 2013 13:20:27]