My application should allow the users to select the required columns to proceed with further evaluation of the data. And I want to set the column list box status to required. But it is still displaying optional in the modal. How to set them to required.
Button box("X Column", colListX<<APPEND></APPEND>And I even wanted to display an error msg when the required fields are not selected. Can "Isempty" function used to check whether column list box is empty or not.
Error = expr(New Window("JMP ALERT" , <<MODAL></MODAL>