About RedfishExtensions schema

Seem like there are conflict between RedfishExtensions schema and Redfish specification

from RedfishExtensions (xml) schema
redfish.dmtf.org/schemas/v1/RedfishExtensions_v1.xml
descript AllowablePattern annotation is a 'array' string type.

</Term>

<Term Name="AllowablePattern" Type="Collection(Edm.String)" Nullable="false">

<Annotation Term="OData.Description" String="The term specifies a regular expression that describes the allowable values for a read-write property as supported by the service."/>

</Term>



but from redfish spec 1.16.0
www.dmtf.org/sites/default/files/standards/documents/DSP0266_1.16.0.pdf
it gave example is string type, seems like it is not consist with above schema

{

"AssetTag": "22HOU-34566",

"AssetTag@Redfish.AllowablePattern": "^[\\w:-]{0,31}$"

}

not sure which type for AllowablePattern annotation is correct ?
Thanks