AI Issue

[AngleWyrm]

call Sys_Set_AI_Storage_Long(sys_long_Player_ID, 1, 1, gbl_ai_state_attack_system)

To restate my question in more of a computer language than an interpersonal one:

I would like to use a couple AI_Storage registers; one to hold the date of plan activation, one to hold the step number in a masterplan sequence. Sort of a mini-state within the state machine. Then I would call an indexed set of functions based on step number.

Sys_Set_AI_Storage_Long: boolean
plr_index: long
elem_index: long
list_index: long
new_long: long

Sys_Get_AI_Storage_Long: long
plr_index: long
elem_index: long
list_index: long

What elements and lists are available/in use? Can I just make them up?