Simple question from a newbie. Also I want to know how to detect it when there is a difference between the hit distance of last line trace and the one before it. Thank you 
But I want the game to compare for me, the system must be aotumatic, is there a way to detect this difference with nodes? Like every time this nodeset works, it will check if the distance is same as before, and it will trigger an another nodeset if there is a difference. How Can I achieve that?
Ok, I get it.
But, the distance will basically never be the same as before, it always varies a little.
Do you mean approximately the same as before?
Not necessarily aproximitly, there could be a tolleration. But mabe aproximitly could also do the trick in my case, but it’s better with a certain tolleration.
Ok, well we can make the tolerance part of the blueprint.
I will put some code here later ( have to go right now ).
If I set the threshold more than literally 0, it always detects a difference. Starting location is inside the character it’s probably hitting the character, tho I don’t see the line turnig green. Firstly, in the probable case of line trace hiting the charactter, how can I prevent it?
It will. Bigger threshold = no difference.
No, I mean literally anything bigger than absolute 0 results in no difference every time, I tried it with 0.01 treshold value and the resoult is same. Altought, when there is no treshold, it detecs a difference every time, even when the character stands still. Really bizarre I don’t understand.