Password Access for a sheet

I am new to writing VBA and need to restrict access to a sheet in a workbook. I have macro that assigns a password to the sheet, but it seems that the password isnt defined as anything entered will unlock the password. Can someone please look at my code and identify where I am missing assigning the password a value?

Code:

---

Private Sub Workbook_SheetActivate(ByVal Sh As Object)
Dim strPass As String
correct_pass_given = 0
Dim lCount, number_of_tries_allowed As Long
Set hide_sheet = Sheet11 ' Give the name of the sheet to hide (This is not the Sheet Tab name but the one that shows outside the bracket.)
number_of_tries_allowed = 3 'this is to restrict the number of tries at one go
'MsgBox correct_pass_given

If ActiveSheet.Name <> "ContractorInformation" Or correct_pass_given = 1 Then
Else
 hide_sheet.Columns.Hidden = True
 'Allow 3 attempts at password
 For lCount = 1 To number_of_tries_allowed
  strPass = InputBox(Prompt:="Password Please", Title:="PASSWORD REQUIRED")
  If strPass = vbNullString Then 'Cancelled
      MsgBox "Password incorrect", vbCritical, "Message"
  Else: correct_pass_given = 0 'Correct Password
      Exit For
  End If
 Next lCount
 If lCount = number_of_tries_allowed + 1 Then 'They use up their 3 attempts
 Exit Sub
Else 'Allow viewing
  hide_sheet.Columns.Hidden = False
  End If
  End If
 End Sub

---

Thread moved from 'VB6' forum to the 'Office Development/VBA' forum (while VBA and VB6 have some similarities, they are not the same thing)

The only thing you are checking for is whether the password entered is null.

If not, then it goes right through.

You need to be checking if what is being entered = 'proper password'