Polymer drawer-panel wont close -

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i have core-drawer-panel core-menu. able open drawerpanel when click on menu option. problem having when click on item in drawer panel not close. have added javascript code @ bottom copied spa demo on polymer-projects, still doesn't close. 

<template is="auto-binding" id="template">     <core-drawer-panel id="drawerpanel">         <core-header-panel drawer id="drawer">             <core-toolbar id="navheader">                 <span>menu</span>             </core-toolbar>             <core-menu selected="{{option}}" on-core-selected="{{selectedoption}} valueattr="data-category">                 core-items...             </core-menu>         </core-header-panel>     </core-drawer-panel> </template>  <script>     var template = document.queryselector('#template');     var navicon = document.getelementbyid('navicon');     var drawerpanel = document.getelementbyid('drawerpanel');      navicon.addeventlistener('click', function() {         drawerpanel.togglepanel();     });      template.selectedoption = function(detail) {         if(detail.isselected) {             drawerpanel.close();         }     } </script>

you have listen template-bound event before can queryselector or add listeners inside template. try rewriting this:

<script>     var template = document.queryselector('#template');     template.addeventlistener('template-bound', function() {         var navicon = document.getelementbyid('navicon');         var drawerpanel = document.getelementbyid('drawerpanel');          navicon.addeventlistener('click', function() {             drawerpanel.togglepanel();         });          this.selectedoption = function(detail) {             if(detail.isselected) {                 drawerpanel.close();             }         }     }); </script>

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