Problems with formatting a scatter chart using macros

[Jeremy42]

I am having problems with formatting a scatter chart using macros. I am able to import all the data into series and change most of the settings,
but I am having problems with part of the code. This code is located on a different sheet then the one the data exists and the chart is being created on hence the awkward coding.

    Set myChtObj = Sheets("Output Summary").ChartObjects.Add _
        (Left:=380, Width:=551, Top:=296, Height:=405)
    With myChtObj
        .Name = "CDF Plot"
    End With
    
    'Can't get this to work right - doesnt cause error but doesn't actually add the major and minor gridlines
    'myChtObj.Chart.ChartArea.Select
    'myChtObj.Chart.Axes(xlCategory).Select
    'myChtObj.Chart.Axes(xlValue).HasMinorGridlines = True
    'myChtObj.Chart.Axes(xlValue).HasMajorGridlines = True
    
    'Can't get this to work right - fails at Worksheets("Output Summary").Chart("CDF Plot").Activate
    'Worksheets("Output Summary").Chart("CDF Plot").Activate
    'ActiveWorkbook.Sheets("Output Summary").Activate
    'ActiveSheet.ChartObjects(1).Activate
    
    'Can't get this to work right - doesnt cause error but doesn't actually add the major and minor gridlines
    'Worksheets("Output Summary").ChartObjects(1).Activate
    'ActiveChart.ChartArea.Select
    'ActiveChart.Axes(xlCategory).Select
    'ActiveChart.Axes(xlValue).HasMinorGridlines = True
    'ActiveChart.Axes(xlValue).HasMajorGridlines = True
    
    'Can't get this to work right - fails at myChtObj.Chart.Activate
    'myChtObj.Chart.Activate
    'ActiveChart.ChartArea.Select
    'ActiveChart.Axes(xlCategory).Select
    'ActiveChart.Axes(xlValue).HasMinorGridlines = True
    'ActiveChart.Axes(xlValue).HasMajorGridlines = True
    
    'Can't get this to work right - fails at ThisWorkbook.Worksheets("Output Summary").Charts("CDF Plot").ChartArea.Select
    'ThisWorkbook.Worksheets("Output Summary").Charts("CDF Plot").ChartArea.Select
    'ThisWorkbook.Worksheets("Output Summary").Charts("CDF Plot").Axes(xlCategory).Select
    'ThisWorkbook.Worksheets("Output Summary").Charts("CDF Plot").Axes(xlValue).HasMinorGridlines = True
    'ThisWorkbook.Worksheets("Output Summary").Charts("CDF Plot").Axes(xlValue).HasMajorGridlines = True
    
    'Can't get this to work right - fails at ThisWorkbook.Worksheets("Output Summary").ChartObjects(1).ChartArea.Select
    'ThisWorkbook.Worksheets("Output Summary").ChartObjects(1).ChartArea.Select
    'ThisWorkbook.Worksheets("Output Summary").ChartObjects(1).Axes(xlCategory).Select
    'ThisWorkbook.Worksheets("Output Summary").ChartObjects(1).Chart.Axes(xlValue).HasMinorGridlines = True
    'ThisWorkbook.Worksheets("Output Summary").ChartObjects(1).Chart.Axes(xlValue).HasMajorGridlines = True
    
    'Can't get this to work right - fails at Sheets("Output Summary").Charts(1).Activate
    'Sheets("Output Summary").Charts(1).Activate
    'ActiveChart.Axes(xlCategory).Select
    'ActiveChart.Axes(xlValue).HasMinorGridlines = True
    'ActiveChart.Axes(xlValue).HasMajorGridlines = True
    
    'Cant get this to work right - does not cause error but does not add the axis titles or set the alignment
    'myChtObj.Chart.Axes(xlCategory).AxisTitle.Select
    'myChtObj.Chart.Axes(xlValue, xlPrimary).AxisTitle.Text = "Simulation Life (n)"
    'myChtObj.Chart.SetElement (msoElementPrimaryCategoryAxisTitleAdjacentToAxis)
    'myChtObj.Chart.SetElement (msoElementPrimaryValueAxisTitleAdjacentToAxis)
    'myChtObj.Chart.Axes(xlValue, xlPrimary).AxisTitle.Text = "Cumulative Distribution Function (cdf)"

I think its a syntax error, but for the life of me I cannot see it. The chart is in logspace and I need the gridlines to show and have the axis titles shown.
Obviously when I am testing the code I remove the ' out at the first of the line.
The strange thing is that similar code works fine such as:

    myChtObj.Chart.Axes(xlCategory).Select
    Selection.TickLabels.NumberFormat = "0.E+00"
    myChtObj.Chart.SetElement (msoElementChartTitleAboveChart)
    myChtObj.Chart.ChartTitle.Text = "Cumulative Distribution Function of Simulation Life"
    
    myChtObj.Chart.Axes(xlValue).MaximumScale = 1
    myChtObj.Chart.SeriesCollection(1).Select
    With Selection
        .MarkerStyle = 2
        .MarkerSize = 10
        .Smooth = True
    End With

If anyone could please point out my error and give a detailed explanation as to why that is wrong I would greatly appreciate it (assume I know nothing about coding).

Edit
The same topic is posted at the following forums:
ozgrid.com/forum/showthread.php?t=195452&p=749864#post749864
mrexcel.com/forum/excel-questions/863995-problems-formatting-scatter-chart-using-macros.html#post4195819
excelforum.com/excel-programming-vba-macros/1090349-problems-with-formatting-a-scatter-chart-using-macros.html#post4113229

I had to do it in this format otherwise I get post denied because of URL.