Features = new Meteor.Collection("features"); Schemas.Feature = new SimpleSchema({ charId: {type: String, regEx: SimpleSchema.RegEx.Id}, name: {type: String}, description:{type: String, optional: true}, actions: {type: [Schemas.Action], defaultValue: []}, attacks: {type: [Schemas.Attack], defaultValue: []}, spells: {type: [Schemas.Spell] , defaultValue: []}, }); Features.attachSchema(Schemas.Feature);