Trace table for VB program--HELP!

Hi! I'm hoping someone might be able to help me out with completing the trace table for the following VB program. I need to show the value of each variable as it changes throughout the execution and, show all output. I'm taking a course at university and my final is fast approaching! I'm hoping someone can help me with this as my prof has informed me that a similar question will be on the final. Please help! I am so lost and I would appreciate the help more than you know.


Marcella

Private Sub cmdCompute_Click()
Dim lower As Integer, upper As Integer
Dim index As Integer, num As Integer
1. num = 0
2. lower = Val(InputBox("Enter a value for lower"))
3. upper = Val(InputBox("Enter a value for upper"))
4. index = lower
5. Do While (index < upper)
6. If (upper Mod index = 0) Then
7. num = num + index
8. Picture1.Print "Here is one, " ; index
End If
9. index = index + 3
10. Loop
11. Picture1.Print "The total value is "; num
End Sub

Assuming input for the program will be 3 and 12.


Step Lower Upper Index Num Index<Upper(T/F) Upper Mod Index=0(T/F) Output