[Zope] AND operator and ZCatalog

[Bak @ kedai]

hello
i've read and reread advance ZCatalog howto by Zen, and still failed to do 
what i want.

the situation
i have a ZCatalog that indexes news.  i use keyword index, and text index.  
when i try 

<dtml-in "Catalog(publication=myPub,section=mySec,date_posted=myDate)">
<br>
<a href="<dtml-var SCRIPT_NAME>/<dtml-var "getpath(data_record_id_)"> ">
<dtml-var title></a>
<p><dtml-var publication>|<dtml-var abstract>|<dtml-var section>
<dtml-var myDate></dtml-in>

it seems that the search was ORed, not ANDed.  

i hope i'm clear enough.

thanks

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