How to increase siege AI ammunition replenishment delay ?

[kittehs]

The AI troops get free ammo in sieges after every 2 minutes.

I want to disable this or increase this delay.

 

[SupaNinjaMan]

common_siege_refill_ammo = (
  120, 0, 0, [],
  [#refill ammo of defenders every two minutes.
    (get_player_agent_no, ":player_agent"),
    (try_for_agents,":cur_agent"),
      (neq, ":cur_agent", ":player_agent"),
      (agent_is_alive, ":cur_agent"),
      (agent_is_human, ":cur_agent"),
##      (agent_is_defender, ":cur_agent"),
      (agent_get_team, ":agent_team", ":cur_agent"),
      (this_or_next|eq, ":agent_team", "$defender_team"),
      (eq, ":agent_team", "$defender_team_2"),
      (agent_refill_ammo, ":cur_agent"),
    (try_end),
    ])