[Zope] Odd key erro in ZSQL

[Philip Kilner]

Hi List,

I have a ZSQL method selectedCentreQual that picks up parameters from 
the session: -

select * from mv_CTR_QUAL
WHERE
CtrRef = <dtml-sqlvar expr="REQUEST.SESSION['CtrRef']" type="string">

This method seems to work fine, and returns a single record. When I try 
to use the method in a page template, e.g.: -

<span tal:replace="here/selectedCentreQual/QualID">QualID</span>

I get: -

Error Type:	KeyError
Error Value:	'_r'

Can anyone tell me what I am doing wrong?

-- 

Regards,

PhilK

Email: phil at xfr.co.uk / Voicemail & Facsimile: 07092 070518

"The lyf so short, the craft so long to learne" - Chaucer