implementing checkbox to hide and show which lines in excel chart

I am trying to write a macro to assign to check boxes which I can then toggle on and off to show certain lines in my excel chart.

However when I try use the macro recorder for this it does not work.

So far the code I have tried is:
Sub Macro1()    
    ActiveSheet.ChartObjects("Chart 1").Activate
    ActiveChart.FullSeriesCollection(2).Format.Line.Visible = _
        Not ActiveChart.FullSeriesCollection(2).Format.Line.Visible
End Sub

The problem with this however is it keeps my legend entry even if the line is blank?

Any help would be appreciated thanks.