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Thanks, I modified your code a bit and it works fine:<br /><br />class IAddUser(interface.Interface):<br /> user = schema.BytesLine(title=u'User name', required = True)<br /> role = schema.Set(title=u'Role', required = True, value_type = schema.Choice(title=u'Role', vocabulary='Role Ids'))<br /><br />Just out of curiosity - how do I know what vocablaries are available by default?<br />
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