javascript - Problems with eventHandler arguments using geous.js lib -

i'm having problems retrieve argument passed eventhandler.

i'm using geous put map inside , activeadmin interface. solution working on show page didn't things working on index page. idea attach handler dragend event on marker model geographic coordinates.

what do:

map.locations.add($fields.geousable('getlocation'), { draggable: true, on: { dragend: setfieldslocation }}); 

and setfieldslocation defined below:

  function setfieldslocation (event) {       alert(setfieldslocation.caller);        console.log(event);       $('.geousable').find("input")[0].value = event.data.lat;       $('.geousable').find("input")[1].value = event.data.lng;   }; 

so first line bind handler (for dragend) , method inside geous lib code attachs , calls when event fired, here snippet:

var _onadd = function (locationmarker, opts) {             // not relevant code              if (options.on) {                 (event in options.on) {                      eventhandler = function() {                         var handler = options.on[event],                             location = locationmarker.location;                          return function() {                             handler.call(location);                         }                     }();                      google.maps.event.addlistener(locationmarker.marker, event, eventhandler);                 }             }         }; 

debugger shows location correct location variable when handler called, can't location variable inside "setfieldslocation" function. tried lot of things. changed header of javascript function, used event, e, arguments , kind of things:

console.log("arguments.callee.caller.name = " +          arguments.callee.caller.name);      console.log("arguments.callee.caller.tostring() = " +          arguments.callee.caller.tostring());   

but no luck.

ideas explanation of occurring here appreciated.