Line from Parent to Children on UI

I am trying to create a skilltree for my game and it is created using UI that is set to Screen Space Overlay.

I tried creating a script that draws a line from the parent node to the children node's RectTransform but that doesn't work with my canvas settings.

I'm open to suggestions like instantiating a prefab line or some other way.

This is kinda what im trying to achieve, I have the nodes setup, just missing some lines.