Change attribute value programmatically

Question

I have created product programmatically but when i try to update attribute value with code:

$product->setData($attributeCode, '')->save();

It won't change. The update will work only after i have saved the product in Magento admin GUI. What might be the reason of that?

Code I use to create product:

  $_product->setName($productName)
    ->setId($productID)
    ->setAttributeSetId($attributeSetId)
    ->setStoreId($storeId)
    ->setVisibility(4)
    ->setStatus(1)
    ->setWebsiteIds(array(1)) 
    ->setSku($Sku)
    ->setPrice($price)
    ->setDescription($description)
    ->setShortDescription($shortDescription)
    ->setStockData(array(
         'use_config_manage_stock' => 0,
         'is_in_stock' => $stock,
         'qty' => $qty
    ))
    ->setUrlKey($urlKey)
    ->setCategoryIds(array($CategoryId))
    ->setTypeId("simple")
    ->setData($attributeCode, 5)
    ->save();

Editing script

`$_product->load($productID)->setStoreId($storeId)->setData($attributeCode, 'Blue')->save();`

$_product is an instance of \Magento\Catalog\Model\Product.

Answer 1

The reason for that may your attribute code isn't correct. You should check the attribute code again: STORES > Attributes > Product. You also need to reindex the database and clear your Magento Cache to see the result after updating the attribute.