Multiple update with checkboxes and cfloop

Hi all!
How can I update only selected records from recordset at once?
We have a form page form.cfm and processing page update.cfm.
In form page there is a list of rows generated with <cfoutput query>. Each row contain checkbox, textfield1, textfield2.
Processing page has a query procedure.
I tried cfloop, but always got an error: If checkbox is not checked, variable of checkbox become undefined.

What is the solve of this problem?

re: Multiple update with checkboxes and cfloop

If the checkbox is not checked, it won't be passed to the submitted page. Use cfparam for defaults and check against that.

re: Multiple update with checkboxes and cfloop

Yes, quite right. Cfparam helps!

re: Multiple update with checkboxes and cfloop

Glad to hear it. Post again if you have more questions.