Calc / Functions

Good night,

I'm building an app that requires some calculations, with four int variables that should return a int value that would fetch the field "Prioridade".
I've tried to do this operation using the "Function" new option, and even calculating the variables directly into the events code; neither worked out, thought the script deluge didn't pointed any flaws at the syntax.

I'd really appreciate if you could take a look at this functions, I've shared the form with support at zoho dot com - please, access using the link:
http://creator.zoho.com/felipeccastro/form/64/

Thanks to you all, and keep up with the great job.

Felipe Castro