Pods relationship fields

Hello. I am not sure how to import data into a relationship field.

I have Pods Custom post type Artists and CPT Artist’s Works. There is a relationship field that connects them, which is an array. A field created_by_artist is connected to an Artist post, by the title (artist’s name). There is also a number associated with it, which I (not a coder) don’t really understand (ex. for Bakst Leon it is 121).

I am importing Artist’s works, say for Bakst Leon. If I make the post manually, in the field created_by_artist, I choose the artist from a dropdown list.

I managed to get ALL the fields, including the featured image – except the relationship field.

How do I connect them? Please be very specific and detailed.

Thank you,

Vera