Lost making math

[#1]

I'm sorry I'm lost on math problem any help would be gratefully appreciated.



I'm working out my companies Flex medical form and need the totals of each line to automatically grand total. I have the fields set as decimal, but I really don't understand the syntax to write the calculation equation.



Could someone please be so kind as to point me in the right direction?

Thanks so very much.

[pguerett]

There is a good example of this in the samples that ship with the Designer. Have a look at the install directory under EN/Samples/Purchase Order/Dynamic Interactive/Forms