Excel 2000 macro Assistant.NewBalloon
 

Visual Basic Macro was previously working, now returnValue = .Show always = 0

With Assistant.NewBalloon 'Ask Processing year
.Heading = "Mainline Processing"
.Text = "Select the year to process"
.CheckBoxes(1).Text = Previous_yyyy_string
.CheckBoxes(2).Text = Current_yyyy_string
.CheckBoxes(3).Text = Next_yyyy_string
.Button = msoButtonSetOkCancel

returnValue = .Show