Can't show objects in table

Such a strange thing.
I have a list of object stored in a process variable. Objects are not null (as I logged some of their properties) but I can’t show them in a table on UI form.
This is my configuration
configuration

Hello - did you have the chance to confirm the response content of the REST API call? This can be retrieved using the network tab of the developer tools when you load the page/form in your favourite browser.