@Dat Nguyen, I know the code name for the Page Type and I did try to put that code name in Object Type field and then I put one of the field names in the Return Column Name field for uni selector but when i try to add new record in Data tab, i get error message then the New Record page does not display at all, instead An error occurred and your request couldn't be completed.. displays on the page.
Can you please give a working example of how to put the Page Type name in Object Type? I was thinking that since the syntax for Custom table was such as customtableitem.<customtableCodeName> so similarly i have to use some kind of reserve word before putting the code name for page type..