Hi Angie,
To be able to get the multiple selections you must loop in the items of the listbox, verify if it is selected and then add it to the row if it is selected...
To loop through all items and verify it's item state, use the following code:
for (var i = 0 ; i < ListBox1.length; i++){
if (ListBox1.getItemState(i) == true){
xfa.host.messageBox(ListBox1.getDisplayItem(i));
txtAttendee.rawValue = ListBox1.getDisplayItem(i);
}
}