Returning Value from Existing Saved Search

Hello Everyone,

Does anyone have idea on retriving the value from existing saved search using the suite script?
The Issue is the result on saved search is summed one(total Amount--summary type=sum) and I am using below code to retrive but I am not succesful.Please help!

Code:
function CheckCustomerDeposit(depositSearchResults, salesOrder) {
    nlapiLogExecution('DEBUG', 'details', 'inside function');
    var filters = new Array();
    filters[0] = new nlobjSearchFilter('salesorder', null, 'is', salesOrder);
    //columns[0]=new nlobjSearchColumn('payment');
    // search record using following filters

    var depositAmount = nlapiSearchRecord('customerdeposit',depositSearchResults, filters, null);


    if (depositAmount && depositAmount.length == 1) {
        nlapiLogExecution('DEBUG', 'details','depositAmount.length='+depositAmount.length);
    var depositAmountValue = depositAmount.getValue('amount',null,'sum');