Using filereference to get specific info back to the clinet without using a cfc for the upload

When using a flex filereference with a cfm to upload a file to the server, is there a way to get specific info back to the clinet without using a cfc for the upload, so I can return something?  My current upload cfm looks like this:

<cfset id = FORM.id>

<cfset upload_dir = getDirectoryFromPath(expandPath('attachments'))>

<cfset return_str = "everything went ok">

<cftry>

   <cffile action="upload" result="d"

         filefield="sample"

         destination="#upload_dir#"

         nameconflict="makeunique"

         accept="application/octet-stream"/>

      <cfreturn  d>

   <cfcatch type="any">

      <cfset return_str = "There was a problem uploading the sample">

      <cftry>

         <cffile action="delete" file="#upload_dir##CFFILE.ServerFile#"/>

            <cfcatch type="any">

               <cfthrow message="#CFCATCH.Message# #CFCATCH.Detail# #return_str#">

            </cfcatch>

      </cftry>

   </cfcatch>

   </cftry>