Userform that displays Charts

[PRodgers4284]

I have a userform that displays charts from a worksheet, the form has a next and previous option to view each chart, this works fine if all the charts are on the same worksheet. I need to use charts for various worksheets, how can i do this?

My code is:

Dim ChartNum As Integer

Private Sub UserForm_Initialize()
    ChartNum = 1
    UpdateChart
End Sub

Private Sub PreviousButton_Click()
    If ChartNum = 1 Then ChartNum = 3 Else ChartNum = ChartNum - 1
    UpdateChart
End Sub

Private Sub NextButton_Click()
    If ChartNum = 3 Then ChartNum = 1 Else ChartNum = ChartNum + 1
    UpdateChart
End Sub

Private Sub CloseButton_Click()
    Unload Me
End Sub

Private Sub UpdateChart()
    Set CurrentChart = Sheets("SheetName").ChartObjects(ChartNum).Chart
    CurrentChart.Parent.Width = 725
    CurrentChart.Parent.Height = 450
    

'   Save chart as GIF
    Fname = ThisWorkbook.Path & Application.PathSeparator & "temp.gif"
    CurrentChart.Export FileName:=Fname, FilterName:="GIF"

'   Show the chart
    Image1.Picture = LoadPicture(Fname)
End Sub