TIWListbox how to get Selected Values (Priority support)

[valmeras]

I am using Intraweb 15.2.69 with Rad Studio 10.2.3
How to get all the values or text selected in a TIWListBox when MultiSelect option is true?
Because TIWListBox->SelectedValue and TIWListBox->SelectedText are both UnicodeString instead of TStringList!
So only one value is returned instead of a list even when multiple values are selected at the same time!