Help with a numbers sumif or sumifs formula
I cannot seem to get a sumif or sumifs formula to work. I want to sum two cells and if the answer will be a negative, I want a zero return. I use the "<0", 0 condition. I do get a Zero. but if the sum of the two cells = a positive number or zero, then I want the formula to return a zero or the positive number. I cannot get a formula to do this. I get an error which says I'm putting in too may arguments or the syntax is wrong. Help, anyone?
MacBook Pro, macOS High Sierra (10.13.3), numbers 4.3.1