coldfusion - Dynamic Radio Button disappears when linked back to page -

i have radio buttons on 1 page clear when linked page. want make sure remain checked. problem here dynamic, not used to. there loop may loop 5 times.

this have tried dynamic:

<cfif isdefined("session.checkout.info["flresident_" & add]")      , session.checkout.info["flresident_" & add] eq "yes" >checked</cfif>  <cfif structkeyexists("session.checkout.info["flresident_" & add]")      , session.checkout.info["flresident_" & add] eq "yes" >checked</cfif> 

html

<label for="flresident_<cfoutput>#add#</cfoutput>">    florida resident? </label> <cfoutput>  <input type="radio" value="yes" name="flresident_#add#"        id="flresident_#add#"        required="yes"        <cfif isdefined("session.checkout.info["flresident_" & add]")           , session.checkout.info["flresident_" & add] eq "yes" >        checked      </cfif>/> </cfoutput> <label for="flresident_<cfoutput>#add#</cfoutput>">yes</label> <cfoutput>    <input type="radio" value="no" name="flresident_#add#"         id="noflresident_#add#"         <cfif isdefined("session.checkout.info["flresident_" & add]")              , session.checkout.info["flresident_" & add] eq "no" >            checked        </cfif>/> </cfoutput> <label for="noflresident_<cfoutput>#add#</cfoutput>">no</label> 

can tell going wrong?