By Default I want that all the values (1,2,3) are been selected
If I press Button 'Value 1' then I only choose see value 1 but If I press button 'Value 1' again, I want to see all the values again (this part is done)
But I press Button 'Value 1" and "Value 2" I want to see only the values 1 and 2, not the 3... How can I do this?