haven't tested this yet but I think this is what you are asking for: { "Description" : { "Id" : "TraitDefMeleeHit1", "Name" : "", "Details" : "", "Icon" : "" }, "Type" : "MeleeHit", "ShortDesc" : "+ 2.5% Base Melee Hit", "DisplayParams" : "ShowInPilotToolTip", "ActivationTime" : "Passive", "EffectData" : [ { "durationData" : { "duration" : -1 }, "targetingData" : { "effectTriggerType" : "OnActivation", "effectTargetType" : "Creator" }, "effectType" : "StatisticEffect", "Description" : { "Id" : "MeleeToHitModifier", "Name" : "melee to hit increase", "Details" : "increase melee hit chance", }, "statisticData" : { "targetCollection" : "Weapon", "statName" : "MeleeToHitModifier", "operation" : "Float_Add", "modValue" : "45.0", "modType" : "System.Single" } } ] }