Counting Running Sum

[VisActualyBasic]

Hi all,
I have problem with Counting running sum.
intDiff = days different between two dayTimePickers
If I click btnOne this will change my dateTimePickerToday to next day and increase intDiff to 1
I want to use intDiff as counter when ever i check some checkboxes to count total of checked boxes
Eg : btnOne click intDiff = 1, checked 3 checkboxes intSum = 3
btnOne click intDiff = 2 checked 5 checkboxes intsum = 8
My checkboxes are in group box and I'm using If and For Each loop.
I'm getting only values intSum for each time that I have checked boxes, ones for 3, and then for 5.
Thanks GaGa

[VisActualyBasic]

If it's not clear I have following code:

gpb1  
'= groupbox containing 5 checkboxes chk1 to chk5
dtp1  and dtp2
 ' =  2 dateTimePickers
intDiff 
' = difference of one day each time I click button Calc
btnCalc 
'= button calculated
Dim chk5Box As CheckBox
Din sum As Integer
' sum off all checked checkboxes for n total of day's
Dim counter As Integer
        For Each chk5Box In gpb1.Controls
            If chk5Box.Checked = True Then
                counter = counter + 1
            End If
        Next
'Gives me number of checkboxes that are checked
        Dim day1 As System.DateTime
        Dim day2 As System.DateTime
        day1 = dtp1.Value
        day2 = today.AddDays(1)
        dtp1.Value = day2
' If button Calc is pressed dtp1 progresses to next day
        Dim dtTwo As Date = dtp2.Value
        Dim dtOne As Date = dtp1.Value
        Dim intDayDif As Integer
        intDayDiff = CInt(DateDiff(DateInterval.Day, dttwo, dtOne))
' intDayDif gives me total of daysthat I have progressed, if I have clicked on 02.02.08
five time button Calc dtp1 will progress to 07.02.05 and intDayDiff will be 5

My Problem is to calculate sum of all checked checkboxes for intDayDiff,
If I progressed 2 days (ffirst day I checked 4 chkBoxes and second day3
to have sum of 7
Thanks GaGa

[VisActualyBasic]

Hi all,
60 people have seen this thread, no any comments, its time to move on.
as there is no sugestion from any of 60 ppl for my problem I will mark this thread as solved and will post it on other forum.
Thanks GaGa