country_decisions = { eng_corps_boost = { potential = { always = no has_idea = engineer_corps NOT = { has_country_modifier = improved_fort_defense } } allow = { is_at_war = no years_of_income = 1.0 } effect = { add_years_of_income = -1.0 add_country_modifier = { name = "improved_fort_defense" duration = 3650 } } ai_will_do = { factor = 0 } } }
prostownik11