how to calculate total using SDK.REST retrive multiple

Hi,

I'm trying to create total but i could not able to get the value.

CRM Version : 2015 online update 1

function GetTotalAmtPlan()
{
var TotalPlan = 0;
var TotalPlanGP = 0;

SDK.REST.retrieveMultipleRecords(
    "SalesOrder",
    "select**************************",
    function (results) {
    for (var i = 0; i < results.length; i++) {
         var orderNumber = results[i].OrderNumber;
         for (var a = 0; a < results[i].order_details.results.length; a++) {
              var order_details_oc_PlanAmount = results[i].order_details.results[a].oc_PlanAmount;
              var order_details_oc_PlanGP = results[i].order_details.results[a].oc_PlanGP;
              alert(results[i].order_details.results[a].oc_PlanAmount.Value());
     //TotalPlan = TotalPlan + order_details_oc_PlanAmount;
     //TotalPlanGP = TotalPlanGP + Number(order_details_oc_PlanGP.Value);
         }
    }
    },
    function (error) {
         alert(error.message);
    },
    function () {
         //On Complete - Do Something
    }
);
alert(TotalPlan);
alert(TotalPlanGP);
}

hope you can help me.

Zosimo D. Recio Jr. Microsoft Certified (Business Management Solutions specialist)