How do I compare 3 value

I make 3 variable how to compare at some time when all 3 variable are equal stop game or change layout

Use two conditions in the same event.

Compare Variable VarA = VarB

Compare Variable VarA = VarC

If VarA is equal to VarB and is equal to VarC, then VarB is equal to VarC.

how I make in construct 2

Use two conditions in the same event.

And use the system condition "Compare variable".