Hi @kinghnvn
I believe I found the solution that you were originally looking for
Set the OnSelect property of the Button to
If(Not(ThisItem.ID in ColItemSelected),Collect(ColItemSelected, {ID:ThisItem.ID}))
Set the Default property of Checkbox to
ThisItem.ID in ColItemSelected.ID
If you want to use Check Icon then Set the Visible property of Icon to
ThisItem.ID in ColItemSelected.ID
Result

Note:
1. We can use either CHeckbox control or Icon
2. Set Onvisible property of the screen to
Clear(ColItemSelected)
Thanks,
Stalin - Learn To Illuminate