I belive you want the following:
119 NOTATION-equal single<xs:integer> sequence<xs:NOTATION>
120 gregorian-equal single<xs:integer> sequence<xs:gregorian>
121 hex-binary-equal single<xs:integer> sequence<xs:hex-binary>
122 base64-equal single<xs:integer> sequence<xs:base64>
to be
119 NOTATION-length single<xs:integer> sequence<xs:NOTATION>
120 gregorian-length single<xs:integer> sequence<xs:gregorian>
121 hex-binary-length single<xs:integer> sequence<xs:hex-binary>
122 base64-length single<xs:integer> sequence<xs:base64>
