Excel VBA Export chart

Question

I know absolutely nothing about VBA, I'm just trying to have 4 charts (that are already separated in their own tabs) be seamlessly exported as PNG files to a prespecified location every time I save an excel document.

Going through some of stackoverflow's database I managed to do something similar with a worksheet that I wanted to export as a CSV, but I can't manage to do the same for my charts.

Right now thats what my VBA looks like for ThisWorkbook:

Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)

Application.DisplayAlerts = False
Application.ScreenUpdating = False
ThisWorkbook.Worksheets("CSV Monthly Update").Copy
ActiveWorkbook.SaveAs Filename:="CSV Monthly Update.csv", FileFormat:=xlCSVWindows
ActiveWorkbook.Close

Application.DisplayAlerts = True
Application.ScreenUpdating = True

End Sub

'This above part works well'

'The one below doesn't, I'm trying to get the chart from Worksheet "Growth_of_10k" to be exported but it gives me a Runtime error 9 about runscript being out of page'

Sub ExportChart()
    Dim objChrt As ChartObject
    Dim myChart As Chart

    Set objChrt = Sheets("Growth_of_10k").ChartObjects(3)
    Set myChart = objChrt.Chart

    myFileName = "myChart.png"

    On Error Resume Next
    Kill ThisWorkbook.Path & "\" & myFileName
    On Error GoTo 0

    myChart.Export Filename:=ThisWorkbook.Path & "\" & myFileName, Filtername:="PNG"

    MsgBox "OK"
End Sub

Any idea how I would need to change the code so that the chart is exported automatically to the same location as the file (or another pre-specified location, it doesn't matter) at the same time as I save the excel document?

I'm sorry if this is a newbie question, this is really my very first endeavor with VBA and googling can only get you so far when you don't understand what you're doing.

Thanks a ton in advance.

Answer 1

A chart sheet is different from a chartobject embedded on a worksheet.

Thisworkbook.Sheets("Chart1").Export _
        Filename:=ThisWorkbook.Path & "\" & myFileName, Filtername:="PNG"