Show event custom fields in grid

Hi, I am using JP CS Event Booking combined with JP CE Grid Pro. I have created custom fields for my events and would like to show them in the grid. I can select the custom fields to be shown in the extra text field of the grid but it doesn't work. If I use any other field for the extra text, it works.

We have tested the reported issues on our demo site and did not find any problems with the custom field dynamic source value in the Grid Pro extra text field. Please find the attached screenshots for your reference.

Kindly check your custom field build format.

Thank you