ListBox Multiple Selections - Adding/Subtracting Cell Values

[Flapjack]

Help. I am really frustrated with this. I am so close but not quite there and I feel it should be an easy answer but I just can't quite get it.

I have a Userform with a multiple selection Listbox. Basically I have a base part number and the user hits a command button that brings up the listbox and they select/deselect the option suffix codes they want to add to the part number (final part number is the base number with the option suffixes separated by a "-"). That part works fine. The problem I am having is trying add and subtract the pricing of the options from the base price. Base price is shown below as xNumber (101.18 is the base price). The option prices are held in column 3 of my source range. I added the line Cells(31, 4).Value = xNumber + xLstBox.List(I, 2) to increment the base price which is held in cell D31 [Cells(31,4)]. How do I get it to subtract the option prices as they deselect their options?

Sub Rectangle1_Click()

Dim xSelShp As Shape, xSelLst As Variant, I, J As Integer
Dim xV As String
Dim xNumber As Double
Set xSelShp = ActiveSheet.Shapes(Application.Caller)
Set xLstBox = ActiveSheet.ListBox1
xNumber = 101.18

If xLstBox.Visible = False Then
    xLstBox.Visible = True
    xSelShp.TextFrame2.TextRange.Characters.Text = "Select Options"
    xStr = ""
    xStr = Range("ListBoxOutput").Value
     
    If xStr <> "" Then
         xArr = Split(xStr, "-")
    For I = xLstBox.ListCount - 1 To 0 Step -1
        xV = xLstBox.List(I)
        For J = 0 To UBound(xArr)
            If xArr(J) = xV Then
              xLstBox.Selected(I) = True
              Exit For
            End If
        Next
    Next I
    End If
Else
    xLstBox.Visible = False
    xSelShp.TextFrame2.TextRange.Characters.Text = "Select Options"
    For I = xLstBox.ListCount - 1 To 0 Step -1
        If xLstBox.Selected(I) = True Then
        xSelLst = xLstBox.List(I) & "-" & xSelLst
        Cells(31, 4).Value = xNumber + xLstBox.List(I, 2)    
        End If
    Next I
    If xSelLst <> "" Then
        Range("ListBoxOutput") = Mid(xSelLst, 1, Len(xSelLst) - 1)
    Else
        Range("ListBoxOutput") = ""
    End If
End If
End Sub

 

[Fluff]

Duplicate to: Listbox with Multiple Columns - adding values in Column to Spreadsheet Cell

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