Stop the code if the cells are empty

im trying to find a way if my variable 'answer' (which is a cell) is blank/empty, how to stop the script.

I initially tried:

answer variable is:

error:

Answer 1

[Ronald Godagandeni Dewage]

i think the found the answer its;

if isempty(answer)
    return
end

let me know if anyone got better abetter idea