problem with parsing json in jquery autocomplete -

i'm having trouble in parsing json data in jquery autocomplete. json comes code:

<cfset theq = lcase(q)>  <cfquery datasource="#source#" name="qry" maxrows="20">     select top 10 lastname     info         lower(lastname) '#theq#%'     order lastname </cfquery>  <!--- before can serialize query, need convert array of structs. ---> <cfset rows = [] />  <!--- loop on query convert it. ---> <cfloop query="qry">  <!--- create row struct. ---> <cfset row = {} />  <!--- add each column our struct. ---> <cfloop index="column" list="#qry.columnlist#" delimiters=",">  <cfset row[ column ] = qry[ column ][ qry.currentrow ] />  </cfloop>  <!--- append row struct row array. ---> <cfset arrayappend( rows, row ) />  </cfloop>  <!--- have converted our query array of structs, can serialize using serializejson() method. ---> <cfset serializedquery = serializejson( rows ) /> <cfoutput>#serializedquery#</cfoutput> 

i converted query array of structures , serialized json. now, parsing json in jquery autocomplete not work. data looks this:

[{"lastname":"abc"},{"lastname":"def"},{"lastname":"ghi"}] 

here code autocomplete:

$(document).ready(function() {     $("#name").autocomplete("data/name.cfm",{         minchars:1,         delay:10,         autofill:false,         matchsubset:false,         matchcontains:1,         cachelength:10,         selectonly:1,         datatype: 'json',          parse: function(data) {             var parsed = [];             var dataparsed = $.parsejson(data);                 (var = 0; < dataparsed.length; i++) {                 parsed[parsed.length] = {                 data: dataparsed[i],                 value: dataparsed[i].lastname,                 result: dataparsed[i].lastname                 };             }              return parsed;         },         formatitem: function(item) {             return item;         }      }); 

when type in text field, whole json string search result. i've looked other codes parsing still can't working. help? thanks.

references: simon whatley autocomplete; ben nadel query array of structs , serialize json

one problem in loop iterating data.length when should iterating dataparsed.length

if using simon whatley autocomplete plug-in, according demo on website, plugin expected autocomplete results on individual lines, e.g:

abc def ghi 

so should rid of parse function provide in jquery, , modify coldfusion script return 1 name per line i.e. abc\ndef\n... no need use json or else. (at least thats how demo on website works http://www.simonwhatley.co.uk/examples/autocomplete/jquery/data/country.php)

just confirm, should add alert('aaa') inside of parse() function, bet see never being called.