Do this:
(Events 1-9 are used for coloring)
[X] 10 [0] onBotSpawn > Bot > SetBotMovement > Wander [ ] [300]
[X] 11 [0] onBotSpawn > Bot > SetBotAim > NearestPlayer
[X] 12 [0] onBotSpawn > Self > fireRelay
[X] 13 [0] onRelay > Bot > BotAttack > fireWeapon
[X] 14 [500] onRelay > Self > fireRelay
I don't use the built in AI code. I normally use the VCE and Zone Events to create my own interactive bot that listens to me, and interacts with the environment.