Like it was pointed out a number can’t be three values at once.
What you’re trying to do is more complex. Three objects, each with their own value. Maybe something like this?
Var count=0
Every tick
— set count to 0
Sprite: var=1
— add 1 to count
Sprite: var=3
— add 1 to count
Sprite: var=7
— add 1 to count
Count=3
— set text to “match”