Network days in VBA Calculation

Hi All.
I have the below coding which has been causing me bother for 3 days now.
I am using Microsoft Excel 2010.

The code below should start on E1, go to the next empty cell, check the cell on the left if the right part of the value is L001 then add 0.5 into the current cell or else
check the cell on the left if the right part of the value is L002 then add the number of network days between the date in B2 and C2.
The code works fine when I run it the first time, then anytime after its adding a value but its not the network days calculation.
I guess this maybe because I have set the cell to B2:C2 for the network days but it will be B2:C3 for the first row, but then move down each time to B3:C3, then B4:C4 and so on.
Can anyone help?

Code:

---

    range("E1").Select
    If ActiveCell.Offset(1, 0).Value = "" Then
    ActiveCell.Offset(1, 0).Select
    Else
    range("E1").Select
    Selection.End(xlDown).Select
    ActiveCell.Offset(1, 0).Select
    End If
   
    If ActiveCell.Value = "" Then
    If Right(range("D2"), 4) = "*L001*" Then
    ActiveCell.Value = Application.WorksheetFunction.networkdays(range("B2"), range("C2")) - 0.5
    Else
    If Right(range("D2"), 4) = "*L002*" Then
    ActiveCell.Value = Application.WorksheetFunction.networkdays(range("B2"), range("C2"))
    End If
    End If
    End If

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