Detecting total deposits on a SalesOrder

Hello All,

I'm working on a routine to determine the total amount of deposits against a SalesOrder. Here's what I have so far. I'd love a second set of eyes on this to see if there is a better way to handle this or if there are any edge cases I'm missing.

Thanks in advance!

 function getCustomerDepositTotalForSalesOrder(salesOrderId) {    var filters = [      new nlobjSearchFilter('salesorder', null, 'anyof', salesOrderId)    ];      var columns = [      new nlobjSearchColumn('total', null, 'sum')    ];      var results = nlapiSearchRecord(      'customerdeposit',      null,      filters,      columns    );      if(!results) {      log("no deposits found for record: " + salesOrderId)      return 0;    }      return results[0].getValue('total', null, 'sum')  }