diff --git a/app/Controllers/StockController.php b/app/Controllers/StockController.php
index 85265995..449ca547 100644
--- a/app/Controllers/StockController.php
+++ b/app/Controllers/StockController.php
@@ -895,6 +895,10 @@ private function updateGasStockConsumption($date , $consumption){
             $resultExists['consumption'] = $resultExists['consumption']+($consumption);
             $this->gasStockDetails_model->update($resultExists['id'],$resultExists);
         }
+        else if(true){
+            //previous month stock to be subtracted with consumption if stock is present .
+ 
+        }
         else{
 
             $startDate = DateTime::createFromFormat('Y-m-d', $date)->modify('first day of this month')->format('Y-m-d');