Thx mastahg. One more question is how to detect tethers? For example, those tethers between the boss of e12s and those elemental crystals. I have confirmed that those tethers are not accessable by the gameobjectmanager. As I read the code of ACT triggers, I found that thoese tethers are detected by the associated markers. I don't know if there is some similar APIs in buddybot.