how to draw a line in HUD (one end fix, the other end moves)

[uboats]

I want to draw a line, one endpoint of this line is fixed at a position, while the other end is moving, how to create such line obj in lua code?

 

what parameter controller should I use?

 

Thanks

[gyrovague]

You can maybe try line_object_set_point_using_parameters, but I have no idea how it works, never tried it before.