ok my function checks an integer from 0 to 100 ...

depending on the number a select case statement will say what letter (a+, a, a-, b+ ...) is the equivalent to that integer n show it in the label (lblmpaverage) ... it works fine for every number except that when the average is 100 it only put 100 in the label n no letter next to it like it does for every other number ...

Select Case cmbnumbers.ListIndex
Case Is = 0
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20) + a(21) + a(22) + a(23) + a(24) + a(25)) / 25)
Case Is = 1
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20) + a(21) + a(22) + a(23) + a(24)) / 24)
Case Is = 2
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20) + a(21) + a(22) + a(23)) / 23)
Case Is = 3
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20) + a(21) + a(22)) / 22)
Case Is = 4
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20) + a(21)) / 21)
Case Is = 5
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19) + a(20)) / 20)
Case Is = 6
average = ((a(1) + a(2) + a(3) + a(4) + a(5) + a(6) + a(7) + a(8) + a(9) + a(10) + a(11) + a(12) + a(13) + a(14) + a(15) + a(16) + a(17) + a(18) + a(19)) / 19)
Case Is = 7

Call test(average)
letter = test(average)

lblmpaverage.Caption = average & " [" & letter & "]"

this is my function ...

Public Function test(x As Integer)

Dim letter As String

Select Case x
Case Is >= 97
letter = "A+"
Case Is >= 93
letter = "A"
Case Is >= 90
letter = "A-"
Case Is >= 87
letter = "B+"
Case Is >= 83
letter = "B"
Case Is >= 80
letter = "B-"
Case Is >= 77
letter = "C+"
Case Is >= 73
letter = "C"
Case Is >= 70
letter = "C-"
Case Is >= 65
letter = "D"
Case Is >= 60
letter = "F"
Case Is >= 0
letter = "F-"
End Select

test = letter

End Function

y won't it give a letter to the number 100 ????