Problem with cfloop round session variables

Hi,

I have a multi step form which stores each form variable into a session. At the end of the form I am trying to loop through the session variables and insert the values into a database but I keep getting cfml structure referenced as part of anexpression errors.

Here is my session code (this is stored in application.CFC:

<cfset SESSION.FormData = structNew() />

On the last step of the form, here is my loop:

<!--- lets get the colums from the quote table --->
<cfquery name="selectColumns" datasource="#request.dsn#">
  SHOW COLUMNS
  FROM INSURANCE_QUOTES
</cfquery>
<!---and lets enter the quote details by looping over the columns--->
<cfquery name="quoteUpdate" datasource="#request.dsn#">
  UPDATE INSURANCE_QUOTES
  SET HANDLER_ID='#session.userID#',
   SCHEME_ID = '#form.insurance_scheme#',
   <cfoutput query="selectColumns">
    <cfif isdefined("REQUEST.FormData")>
     <cfswitch expression="#left(type,3)#">
      <cfcase value="dat">
       <cf_dateasdata
        DateType="#type#"
        DateField="#REQUEST.FormData[field]#"
       />
       #field# = #ThisDate#,
      </cfcase>
      <cfcase value="dec,int">
       <cfif REQUEST.FormData[field] eq ''>
        #field# = null,
       <cfelse>
        <cfloop from="1" to="#len(variables.numericExclusions)#" index="thisExclusion">
         <cfset REQUEST.FormData[field] = replace(REQUEST.FormData[field],mid(variables.numericExclusions,thisExclusion,1),"","All") />
        </cfloop>
        #field# = '#REQUEST.FormData[field]#',
       </cfif>               
      </cfcase>
      <cfcase value="tex,var">
       #field# = <cfqueryparam value="#REQUEST.FormData[field]#" cfsqltype="cf_sql_longvarchar" />,
      </cfcase>
      <cfdefaultcase>
       #field# = '#REQUEST.FormData[field]#',
      </cfdefaultcase>
     </cfswitch>
    </cfif>
   </cfoutput>
   DATE_CREATED = #now()#,
   QUOTE_EXPIRY = #quoteExpiry#,
   USER_LAST_UPDATED = '#session.userID#'
  WHERE QUOTE_ID = '#thisQuote#'
</cfquery>

Can anyone see any problems with my syntax?

I'd appreciate any support