Thank you for that sign help. I no longer get an expression error, however, I am not getting a 3 color variant.
if (Sum ( [ISSUES P1-Critical] ) <10, lightgreen(), if( Sum ( [ISSUES P1-Critical])<=10 and Sum ( [ISSUES P1-Critical])>=50, Yellow(), lightRed()))
All Numbers <10 are green (that is good)
All numbers equal to or greater than 10 and less than 50 are red, the middle range between 10 and 50 is not yellow, its red too, is not getting picked up at all. is there a better way in QlikSense to write the logical clause?