Trend Analysis in Line Chart

Hi Experts,

I would like to display a trend line of a key figure in the line chart just like you can do it in WAD for example based on an existing data series.

As I could not find any option in the properties of the line chart, I was wondering whether there is any workaround which you might know in order to implement such a trend analysis chart?!

Thanks in advance for any reply!

Cheers

Tobias