Calculate Sum of Integer Values into Column

[Brian S1]

Hi Everyone,

I am attempting to calculate a 'Total Score' column with the sum of 10 integer fields. I have tried creating a business rule to calculate the value, however, the below code is not working. 

Can someone take a look to see what I am missing? Any help would be greatly appreciated.

Thank you,

Brian

[vkachineni]

var a = parseInt(current.fieldname)==NaN?0:parseInt(current.fieldname); //return a zero if not a number

//rest of them

var k = a + b  + c