i am using the following code to format a chart with a toggle button

With Worksheets("Charts").ChartObjects(1).Chart
.HasTitle = True
.ChartTitle.Text = "First Quarter Sales"
.Type = xlColumn

when the togglebutton changes state, i want the chart to be stacked 100

i tried .type=xlstacked100

but that didn't work. can somebody please tell me what i would use to
accomplish this?

thanks
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Gary