Video: How to Toggle a Chart Reference Line Off/On Using a Control+Conditional Action

A Sigma user recently asked in a support chat whether an action could make a target reference line on a chart appear or disappear based on a control’s value. I put together a quick video walkthrough for their use case, and it might fit yours too. The challenge: They had a reference mark (e.g., “Yearly Target”) on a line chart, driven by a control value, and wanted it to show or hide depending on how another control was set without manually editing it every time.