<screen-extend xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/xml-screen-3.xsd">

  <form-single name="UpdateUserAccount">
    <field name="externalUserId"><default-field><text-line size="60"/></default-field></field>
  </form-single>

</screen-extend>