Send Ajax request after Auto Complete text box - after_update_element

Continuation for my previous post about Auto complete plugin

I have used after_update_element to send the value that is selected in the Auto complete

<%= text_field_with_auto_complete 'phonenumber', 'to',{:size=>25, :class=> "text ui-widget-content ui-corner-all", :value=>@service_order.phonenumber}, {:skip_style => false, :after_update_element=> "function(element,value){new Ajax.Request('/controller/action', {asynchronous:true, evalScripts:true, method:'get', parameters:'number=' + $('phonenumber_to').value }); return false;
}"} %>

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