CFUPDATE - managing 'confirm value'

I have the attached  two form entries to ensure that the user submits a correct email address during a database update. The value of the  variable in the databases is email - and i have a text entry in the form for email. I have also included a email2 text field for the user to retype his email address - for form checking.

The form checking works fine, no problem. However, when I run the update action page cfupdate will not handle the email2 variable as, of course it does exist in the table.

Is there a way to 'delete' the fom.email2 variable and value at the top of the actionpage, so the cfupdate tag just does not get to see it. Or is there another way around it.  I would rather not change my
form checking approach.

many thanks for any help,

james

<div id="Layer2" style="position:absolute; left:261px; top:201px; width:144px; height:23px; z-index:2">
            <input tabindex="3" name= "Email" type="text" id="Email" maxlength=50 value = <cfoutput>#registration_updte.Email#</cfoutput>>
          </div>
 
 
 
          <div id="Layer3" style="position:absolute; left:261px; top:247px; width:145px; height:23px; z-index:3">
            <input tabindex="4" name="Email2" type="text" id="Email2" maxlength=50  value = <cfoutput>#registration_updte.Email#</cfoutput>>
          </div>

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