How to make discontinues line with multi line in GUI

Hi, I wonder how to use the multiline function to make something like dash lines
You can see that since all points are connected, there is a problem with coordinates. It should be something exactly like x,y coordinates with units

Can you just use regular line instead?

I also need to zoomIn which means redraw a several time of those dot, using regular line is hard to clean them up.

oh but wait, why not using dashed lines then?