Sum many text variables in one variable

Hi David, thank you for reply.

Now I have understand what Phil meant (thanks again Phil). I have some knowledge about how to use the software but I don't know the basic mechanisms behind it. I have talked with our programmer, I "kindly" forced him to have a look to the issue and he's going to work on it. (He said something like "yes, yes... no problem, but now I'm busy"...eh eh eh)

But, still, for personal knowledge and understanding, I would like to solve the variable sum issue. I know I am going to need it anyways.

So, I've tried your last js, checking again variable names, but still doesn't work. After last question I have a slide which execute the js. Then, I have a result slide where I have inserted two text boxes with the variables values. As you can see from attached screenshot, even though Q_1, Q_2, etc. show the correct values (y or n), Result1 is still set as default (AAAAAAAAAAAAA).  I don't understand what I'm doing wrong. It should show Result 1= y y y n n y n y y y 

I'm pretty sure I'm not seeing some obvious mistake

Thank you again