node.js - HandleBars - How to Iterate 2 Collections -

i know how iterate single collection, how iterate multiple collections using handlebars?

below routing file

employeepayslip.find({"employeename":""+name}, function(err, db_payslip){ if(err) throw err; salaryitems.find({"employeename":""+name}, function(err,db_salaryitems){   if(err) throw err;   res.render('adminview/pages/examples/payslip-details',{     payslip:db_payslip,     salaryitem:db_salaryitems    });   });  }); }); 

how do below,

{{each payslip}}   <label>{{employeename}}</label>    {{each salaryitem}}     <label>{{item}}</label>   {{/each}}  {{/each}} 

if use 1 each, iteration works, if nested it, not seem display data. how display data both collection?