@Infixo thank you for all your help, but if you vould help me one more time i am trying to remove all district defenses i have removed walls but cannot remove them when the civil engineering comes. please see what i am doing wrong or need to add i know i need to change the urban defenses value to 0 but does not work it seems.
UPDATE Districts SET HitPoints = 75 WHERE DistrictType = 'DISTRICT_CITY_CENTER'; -- default = 200
UPDATE ModifierArguments SET Value = 0 WHERE ModifierID = 'CIVIL_ENGINEERING_URBAN_DEFENSES'; -- default = 200
UPDATE Buildings SET OuterDefenseHitPoints = 0 WHERE BuildingType ='BUILDING_PALACE'; -- default = 0
UPDATE Buildings SET OuterDefenseHitPoints = 0 WHERE BuildingType ='BUILDING_WALLS'; -- default = 50 -- Walls removed to try to remove city ranged attack
UPDATE Buildings SET OuterDefenseHitPoints = 0 WHERE BuildingType ='BUILDING_CASTLE'; -- default = 50
UPDATE Buildings SET OuterDefenseHitPoints = 0 WHERE BuildingType ='BUILDING_STAR_FORT'; -- default = 50
UPDATE Buildings SET OuterDefenseStrength = 0 WHERE BuildingType ='BUILDING_WALLS'; -- default = 2 -- Walls removed to try to remove city ranged attack
UPDATE Buildings SET OuterDefenseStrength = 0 WHERE BuildingType ='BUILDING_CASTLE'; -- default = 2
UPDATE Buildings SET OuterDefenseStrength = 0 WHERE BuildingType ='BUILDING_STAR_FORT'; -- default = 2
this removes walls but does not remove walls from late game after urban defenses.