Converting Field value to integer

1

Hi There,
I am trying to convert field values to integer type so that i can add those values but i am unable to do so.
Need your Help.
Attaching image so that you can see through the code.

Screenshot from 2016-09-24 16:57:22.png1366×768 46.3 KB

The fieldtype which i am converting is select and then assigning the addition to another field of type Read Ony.

2

Try float instead of int.

3

I did it using data as field type.
and converted the other fields to int.
Thanks for the help.
Appreciate it.