I have an issue, I am adding product to cart with custom options(I’ve selected “checkbox” type) through API. Here is json: “product_option”:{ “extension_attributes”:{ “custom_options”:[ {“option_id”:”4″,”option_value”:”9″}, {“option_id”:”4″,”option_value”:”14″} ] } } But in reply I got only {“option_id”:”4″,”option_value”:”14″} added to cart. How can i add several custom options with same option_id? Thank You for the answer!Read more