VBA UDF for color cells

Question

I'm sure my question is simple to most of you as I'm new to UDF. I've created the following UDF but cannot apply it across columns when I use =CheckColor1(H13:M13)

Function CheckColor1(range)
    If range.Interior.Color = RGB(0, 176, 80) Then
        CheckColor1 = "Final"
    ElseIf range.Interior.Color = RGB(255, 255, 0) Then
        CheckColor1 = "Final"
    ElseIf range.Interior.Color = RGB(191, 191, 191) Then
        CheckColor1 = "Final"
    ElseIf range = 0 Then
        CheckColor1 = "Final"
    Else
        CheckColor1 = " "
    End If
End Function

Answer 1

You forgot to define your function's argument object or data type.

According to the syntax for procedural parameters, much like declaring variables, you must use the "As" to specify the type of your argument.

The argument must be declared as a normal variable, omitting the Dim keyword.

You cannot, however, use the name of the data or object type as the argument name itself which was what you were trying to do.

Function CheckColor1(r as Range)
    If r.Interior.Color = RGB(0, 176, 80) Then
        CheckColor1 = "Final"
    ElseIf r.Interior.Color = RGB(255, 255, 0) Then
        CheckColor1 = "Final"
    ElseIf r.Interior.Color = RGB(191, 191, 191) Then
        CheckColor1 = "Final"
    ElseIf r.interior.colordindex = 0 Then
        CheckColor1 = "Final"
    Else
        CheckColor1 = " "
    End If
End Function