In the situation that an array-based list box appears blank, it may be due to a misspelling of an array name in one of the column expressions. If one or more columns is given an undefined array name, the entire list box appears blank. Therefore, it is important to pay close attention to detail to the column expressions of array-based list boxes.

Below is an example of a misspelled array name given to the column expression of the array-based list box. In the right column, the "d" is missing in the array name (arr_food).



Therefore when executed, all the columns of the list box appears blank.



By fixing the misspelled array name in the column expressoin, all the columns are populated.