Hi All, 
I have found lots of helpful pieces of information from this forum but I could not locate a previous example similar to this one, My hope is someone else has the same issue too.
I am trying to write a formula that returns a value based on the value in another column. In this example the amount of mileage dictates which hot route zone the location is in.
Here are the value ranges to help: 
- 599 miles or more returns "No HR" in the hot route zone column 
- 101 - 599 miles returns "CALL"  in the hot route zone column 
- 75- 100 miles returns "Zone3"  in the hot route zone column 
- 50- 74 miles returns "Zone2"  in the hot route zone column 
- 49 miles or less returns "Zone1"  in the hot route zone column 
- If the cell is blank then it returns "CALL"  in the hot route zone column 
I was able to most of it to work except the null pull being to call (if the cell is blank then it should return "CALL"
So just to recap and to provide some examples - here is how the formula should work: 
- If the cell has the value of 602 in the mileage column then the formula returns "No HR" 
- If the cell has a value of 155 then the formula should return "CALL"
- If the cell has a value of blank (null) then the formula should return "CALL"
- If the cell has a value of 83 then the formula should return "Zone3"
- If the cell has a value of 57 then the formula should return "Zone2"
- If the cell has a value of 36 then the formula should return "Zone1"
I have not added the logic for handling blanks (should return "CALL") but currently it is throwing an error for not par sable for this and I can not figure it out. Please let me know how to fix and/or if there is a better way to write this based on above requirements.
Smartsheet Formula:
=IF([Hot Route Mileage (Roundtrip)]@row)>=600, "No HR",IF(AND([Hot Route Mileage (Roundtrip)]@row<=599,[Hot Route Mileage (Roundtrip)]@row>=101),"CALL", IF(AND([Hot Route Mileage (Roundtrip)]@row<=100,[Hot Route Mileage (Roundtrip)]@row>=75),"Zone3",IF(AND([Hot Route Mileage (Roundtrip)]@row<=74,[Hot Route Mileage (Roundtrip)]@row>=50),"Zone2",IF([Hot Route Mileage (Roundtrip)]@row<50,"Zone1"))))