When I use line generator and select the quantity of lines to be 1, it produces 2. Help please!

[LongJessi]

I am using the line generator to create a single vertical line that goes back and forth, but for some reason it keeps putting 2 lines instead of just 1

[Zoltán]

Amount specifies the number of lines that should fit into the Height of the clip.
Try zooming in to the clip if you'd like display a single vertical line.