Caracala and the Armenian Throne - Is There an Existing Relationship?

When caracala became emperor, he summoned the kings of osraini and armenia to rome. He actually deposed king abgar of osrini and made the kingdom a roman province. The armenian king was actually quarrelling with his two sons. So it's tied up with the question of the armenian throne as well. Caracala says to volgeses, you know, give me tyrodates. And as it turns out, volgeses does give him tyridates. Ah. That's not a reason for war. But caracala still tries o invade armenia. There's an army which is sent out