What is wrong with this...

mob/verb
Add()
number1 = input("What is the first number you want to add?") as num
number2 = input("What is the second number you want to add?") as num
number1 += number2 == addresult
alert("Your result is [addresult].")

var
number1
number2
addresult

When I input two numbers to add it just gives me a period.

Thanks,
Punkrock546