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I want to update price for particular store(us) by programmatically.I used below script and its working but problem is it updates for all stores not for particular

function updateconfigProductPrice($productsku_update,$price_to_update,$storeCode)

             {

                $proObj = getObjectInstance()->get('MagentoCatalogModelProduct');

                if ($proObj->getIdBySku($productsku_update))

                {

                   $productId = $proObj->getIdBySku($productsku_update);

                }

                else

                {

                   return FALSE;

                }





                if($storeCode=='us')

                {

                  $storeId = '9';

                }





                //echo 'store_code'.$storeId;   



               if ($productId!= '') {

                    $configProduct = getObjectInstance()->create('MagentoCatalogModelProduct')->load($productId);



                    //var_dump($configProduct->getWebsiteIds());

                    //die;

                    $_children = $configProduct->getTypeInstance(true)->getUsedProducts($configProduct);

                    //echo count($_children);die;



                    foreach ($_children as $child) {





                        //echo $child->getSku();die;



                        if($child->getID()!=''){



                            $childId = $child->getID();



                        $objectManager = MagentoFrameworkAppObjectManager::getInstance();

                        $productFactory = $objectManager->create('MagentoCatalogModelProduct');

                        $productResourceModel = $objectManager->create('MagentoCatalogModelResourceModelProduct');

                        $productResourceModel->load($productFactory, $childId);

                        $productFactory->setStoreId($storeId);



                        $special_price = $price_to_update;

                        $productFactory->setPrice($special_price);

                        $productResourceModel->saveAttribute($productFactory, 'price');

                        echo $child->getSku()."child product updated for store==".$storeId."=with s Price".$special_price.".<br/>";

                        }

                    }



                }

             }

Its update price for all stores but I want to update only for my US(store). Please share your thoughts and let me know what is wrong with code.

if price update then just only one change below way then you can try it

Go to System->Configuration->Catalog->Catalog Price Scope

Then in the tab Price, set price scope to Website instead of global.