CMIS to find SmartFolders

Hi

I create a SmartFolder on alfresco server but when i found folders the SmartFolder that i created was not returned.

The query that i use is:

"select cmis:objectId, cmis:name, cmis:path, cmis:description from cmis:folder where in_folder (???) order by cmis:name"

Is there some possible to return SmartFolder using CMIS query?

Thanks