The List box to show the alphabet and then when a letter is selected, all the items that start with that letter to be shown.
How you are loading these letters. Are they coming from some table or file.
To resolve this you can have an Inline load at the begining of the script and that should resolve your problem.
Load * Inline [
Instead of Changing the script and adding inline table, we can create a ListBox with an Expression
=Left(ITEM_NAME, 1). This would generate a listbox with single unique characters according to your item name.
THank you this was very very easy to do and exactly what I wanted!
Retrieving data ...