[Zope] zope image in postgres ?

[Tyson]

Hi,
       I have a question regarding zope with Postgres.  I am storing 
images in a postgres database using OID's and Bytea's.   I have been 
trying extensively to get these images to display through a zope dtml 
page, but cannot for the life of me.   I tried this but it won't show 
the image.

dtml method called query image:
     <dtml-call "RESPONSE.setHeader('Content-type', 'image/jpg')">
     <dtml-return "sql_get_image_oid(userid='1006')">

another dtml method that should display the image:
     <img src="/Examples/Ty/image_testing/query_image"></img>

I tried this with both data types, oid and bytea but I get no results.  
If anyone could help me, that would be great.  Thanks for your time
     Sincerely,
               Tyson Wenger
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