How to create vertical reference line for Gantt Chart??

I have created a Gantt chart, but now I want to create a vertical reference line.
For ex. If I select June 2022 in slicer, I need to get vertical line for Jun 2022 in Gantt chart and if I go for Dec 2024 , I should get it on Dec 2024. I know it's possible to bring vertical line in line charts, but How shall I bring vertical reference line for Gantt chart???