Due to a technical limitation, you must enter this code inside your Query Look section.
Here is the entire code, you can copy and paste
if (function_exists('gb_get_field')) { $ids =gb_get_field('mb_bricks_template_user_selected_ice_cream');}if (empty($ids)) {return ['post_type'=>'ice-cream','post__in'=> [null],// set as [null] so we don't display anything when no selections ];}return ['post_type'=>'ice-cream','post__in'=> $ids,];