hi ,
if i have 3 number fields , [field1] , [field2], [field3] how can i get sum of them in another field but with this if that i'll have not to enter every one of them a value .
for example
field1 = 10
field2 = (empty)
field3 = 5
field4 = [sum of 1+2+3 ] => 10+0+5 = 15
how can i do it...