Requirement: On runtime, only selected users are allowed to encode item IDs with small letters, by default all are in capital. Thus, I added a checkbox that users can tick to enable typing in small letters to the item ID string edit field, else the checkbox will be hidden/disabled - thus unauthorized users will not be able to type in small letters.
Here is my code on the checked() method of the checkbox and by breakpoint results (see in red font), I know I was able to change the property; but still no luck. What do you think am I missing?
PS. I just recently added the validate() function to check it still works, but it doesn't.
Any help would be appreciated! Thanks!