How to search for columns of a given data type

I'm trying to locate columns of any name by the data type varchar(8). I've tried using the "Find Objects" functionality but it doesn't return anything. I've tried specifying the "Code" of varchar(8) but that doesn't work. I've tried the Advanced tab and tried Data Type = varchar* but that doesn't return any results either. Can anyone help? I'm using PD 16.5.

Thanks,

Mark