I'm afraid the plugin doesn't support a panic alarm. If you want a panic alarm to be triggered by Vera, then that's not possible; the Texecom comms protocol does not allow triggering of a panic alarm. Those scene triggers you mention aren't mine; I assume they must be generic for other alarm types.
If, however, you want to trigger a scene based on a panic alarm being reported from the Texecom panel, that might be feasible. If that's what you're after then let me know, and when I have a minute I'll look and see what additional code would be required.
Would you just want the partition to go into alarm, or would there have to be some indication that it was specifically a panic alarm?