Your solution works!
But, if i deselect an item, it is not removed from the collection.
And if i select that item again, double entry is added in the collection.
Also, do you know any way where we can limit the maximum number of items selected(in my case only 3 at a time could be selected)
Do it the Collect onSelect then put Remove(SelectedItems,ThisItem) onUnselect.
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