[Zope] parameter passing problem.

[prabuddha ray]

I've a parmetarized ZSQL method used to fill data in a combobox.
When changing the selection of another combobox i'm calling the 
page itself again and have to pass the value in the previously 
selected combobox as parameter in the ZSQL method filling data in 
2nd combobox.

i tried this <div tal:repeat="district container/getDistrictUser" 
request.form.districtname> , districtname is the parameter to be 
passed

what sud be the correct syntax