Meta Field

I wanna include the cost field in the bulk edit, but I cant write the ID (variable_alg_wc_cog_cost) that can detect the value of the cost price.

AS the ID in the meta field is just number (Get meta keys from any product by its ID)

Please assist how to add the meta field to read the cost price. I use plugin (https://wpfactory.com/item/cost-of-goods-for-woocommerce/) for the cost price.

Thanks!

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