Base Infrastructure Schema > ec > ec custom attributes Edit this page ECCustomAttributes Instances of ECCustomAttributeClasses that are applied to other items in a schema to add new metadata attributes. Any number of custom attributes may be applied to a schema item but only one instance of each class may be applied. For example: <ECProperty propertyName="LastMod" typeName="dateTime" displayLabel="Last Modified" description="The last time any element in this Model was modified."> <ECCustomAttributes> <DateTimeInfo xmlns="CoreCustomAttributes.1.0"> <DateTimeKind>Utc</DateTimeKind> </DateTimeInfo> <HiddenProperty xmlns="CoreCustomAttributes.1.0"/> </ECCustomAttributes> </ECProperty> { "description" : "The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications.", "isReadOnly" : true, "label" : "Last Modified", "name" : "LastMod", "type" : "PrimitiveProperty", "typeName" : "dateTime", "customAttributes" : [ { "DateTimeKind" : "Utc", "className" : "CoreCustomAttributes.DateTimeInfo" }, { "className" : "CoreCustomAttributes.HiddenProperty" } ] }, Custom attributes allow any custom metadata to be applied because they are defined using a special type of ECClass. <ECCustomAttributeClass typeName="HiddenProperty" appliesTo="AnyProperty" modifier="Sealed" description="Identifies a property which is designed to be hidden from the user interface"> <ECProperty propertyName="Show" typeName="boolean" description="If set to true show the hidden property. Defaults to False. Allows a property override to show a hidden property in a derived class" /> </ECCustomAttributeClass> For more details about custom attributes see ECCustomAttributeClass Last Updated: 02 February, 2022