Hii, 
I was just trying to learn some aura comonent, while trying with aura:iteration to take dynamic value it's not working

<aura:component>
  <aura:attribute name="expenses" type="rishav.Expense__c[]"/> 
   <div class="row">
       <aura:iteration items="{!v.expenses}" var="expense"> 
           <p>{!expense.Name}, {!expense.rishav__Client__c}, {!expense.rishav__Amount__c},
               {!expense.rishav__Date__c}, {!expense.rishav__Reimbursed__c}
           </p> 
       </aura:iteration>
    </div>
</aura:component>

I am not getting where i am doing mistake , but it is not showing any record even after some records are there in my database.
Can anyone tell me where i am doing mistake.
 
Thanks
Rishav