I am hoping someone might help with this. I keep getting a FormCalc error-arithmetic overflow/underflow with my following script if I leave the Total_3d field empty. I have tried setting the default value to zero. But that did not help. Just not sure what I am missing. Thanks in advance for any suggestions!!
if (Total_3c > 4.25) then
Sum (Total_3c / Total_3d)
else $ = "0"
endif