Email Total Sum On Each User Update

Email Total Sum On Each User Update

Hello
I have cerated a badget app forchecking my monthly outputs.
i would like to be informed on my total spendings by email each time i update the outcomes fields.
i know how to create a function that sends email on each user update.
i dont know how to call that total sum field that appears on that certain view, is that possible in any way ?
thanks
tal
talshani