4 Bit Full Adder

[khizaraq]

Hello Guys I have a huge problem
I have designed a full 4 Bit Full Adder, and taken input too but problem is I am unable to use AND, OR, and other logical functions in EXCEL whatever I write it gives me error "#VALUE" just keeps written there

Now I have circuit all designed just don't how to resolve this. The thing is I need to use 0, and 1 and I can't use TRUE and FALSE as that is required by the assignment. I have attached what I have done.