Modding pirate + brigand spawn rates

Which values do I need to enter to either shut down spawn rates or make them rare events? I like to play on VH campaign, but not because I like to continually fight these guys.

descr_strat-
brigand_spawn_value ?
pirate_spawn_value ?

Thanks

From what I've read, the higher the number, the less likely rebels will spawn. It's counter-intuitive, but I have mine set at 200 and facing rebels in the field is more or less a thing of the past. Thankfully.