I am getting the following error message on the highlighted code from a Crystal Report 10.2 formula:

"A variable type (for example 'String') is missing"

Here is my CR Formula in Basic Syntax

Code:
Dim intMonth as Int

intMonth = Month (DateValue ({tblTimeSheetDetail.beginPeriodDate}))

Select Case intMonth
   Case 1
        Formula = "January"
   Case 2
        Formula = "February"
   Case 3
        Formula = "March"
   Case 4
        Formula = "April"
   Case 5
        Formula = "May"
   Case 6
        Formula = "June"
   Case 7
        Formula = "July"
   Case 8
        Formula = "August"
   Case 9
        Formula = "September"
   Case 10
        Formula = "October"
   Case 11
        Formula = "November"
   Case 12
        Formula = "December"
End Select
What am I doing wrong?

Thanks,