Check Boxes Sum on Forms

[TAWise]

Is there some way to show the Total of check boxes selected on a form in real
time rather than having to close the form and then re-open it?
For example,

 

[Klatuu]

Call the function in the After Update event of each check box. Add a line of
code to assign the value to the text box where you want to display the total:

CheckTotals = lngSumTot
Me.txtTotalChecked = lngSumTot
End Functioin