Custom function not adding some info to variable

Hi,

This is a custom function where I create a variable (which is a payload) with some product (variant) information:

Everything is being included correctly into the payload except for the 'variant_summarized_info' (which comes from an external api call), 'name_of_retailer' (input text) and 'unique_id_of_retailer' (input text), which are missing:

This are the inputs of the custom function:

What am I doing wrong here?