FormCalc syntax and scripting issues

Question

Hi, I'm a total beginner at LiveCycle and FormCalc. I have been trying to create a simple form for a school assignment in which the user enters numeric data into a table and the last coloum then is calculated via FormCalc scripting. The equation which I have been attempting to express using FormCalc is  simple, (Cell1-Cell2)/Cell3*Cell4. I skimmed through a few tutorials but obviously my understanding of FormCalc and LiveCycle in general is insuffecient. I am hoping someone who could easily do this will help save me from having to learn FormCalc, any help or advice will be very much appreciated.

Answer 1

You just need to select the field you want the calculation to appear in and go to the calculate event in the script window and use the following in formcalc
$ = ( Cell1 - Cell2 ) / ( Cell3 * Cell4 )
or whatever the corresponding field names are.
Also, you need to cater for empty fields, either set the cells to be numeric with a default value or extend the script to test if a value has been entered yet. Something like
if ( HasValue( TextField3 ) and HasValue( TextField4 ) ) then
    $ = ( TextField1 - TextField2 ) / ( TextField3 * TextField4 )
else
     < some other calc here / or nothing>
endif