Hello, with studio, I have created an xml extension to enable workflow on my document type with the name : DefaultWorkflowFilterOverride

<extension target="org.nuxeo.ecm.platform.actions.ActionService" point="filters">
    <filter id="filter@SerialDocumentReview">
      <rule grant="true">
        <permission>ReadWrite</permission>
        <type>File</type>
        <type>Note</type>
        <type>doc_adm</type>
        <type>doc_qualite</type>
      </rule>
      <rule grant="false">
        <condition>document.isImmutable()</condition>
      </rule>
    </filter>
 </extension>

but it's allways impossible to activate workflow on my document with type doc_adm. Where is the problem ?