Hello
for you it is clear what is GH primer, for me an surely others it is not clear. We will have to search with Google … So it is good to give link.
Also giving an image of a script is good but not enough. Why not giving the script ?
You can look here good advices
As it is a common question I recommand you to search a bit on internet and on old grasshopper forum
First and second image must be with line attractor, 3rd and 4th must be with point attractor.