Range Data Types (Crystal Syntax)

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CrystalReports

I am trying to have crystal reports look at the Sqft for a permit, and show the number as text. I am new to this and have no idea what I am doing! HELP Please! I am trying to use this code below:

Select {vw_BS_Case_Extended.TotalArea}
Case UpFrom 5000 :
"5000 Sqft and Up"
Case 2500 To_ 5000 :
"2500-5000 Sqft"
Case 1000 To_ 2500 :
"1000-2500 Sqft"
Case 500 To_ 1000 :
"500-1000 Sqft"
Case 250 To_ 500 :
"250-500 Sqft"
Case 100 To_ 250 :
"100-250 Sqft"
Case 0 To_ 100 :
"0-100 Sqft"
Case Isnull :
"No Data"

I have been getting this error:"Not Enough arguments have been given to this function"

HELP!