Draw simple arrow using 2 points

Hello guys I don’t know if I am missing something but is there a way to draw an arrow by giving it two points in space?
for debugging purpose?

this is what I am doing for the momen, this doesnt sem healthy…

arrowNode.setLocalTranslation(start);
arrow.setArrowExtent(end.subtract(start));

thx

https://wiki.jmonkeyengine.org/legacy/doku.php/jme3:advanced:debugging