The Table_withAdd still works with the ‘old’ way of binding data, meaning that you have two options:
define the data structure in the property ‘items’ and map the data to the table’s items aggregation in the Process Designer
if the data is stored in a Global Variable: define the path to the Global Variable in the property ‘Items Path’
However, we strongly recommend to not use the Table_withAdd, since it will be removed in new versions of our Standard Content.
Instead, use the Table_withSearch widget, or use the wizard ‘Table with Details’. Both options are more convenient ways to create a table. Let me know if you have any further questions.