[JASS] Get closest destructable?

[Heyer]

hi evryone!!!, im currently trying to make a map, when i want a unit to walk to the closest destructable. Ive been searching around on the forums, but, i couldt find anything. Though i did find something about chopping trees. But it needed jass newgen pack and it doesnt work for 1.22. Oh and btw, i dont know a think about jass. Well i hope somebody would mind to help me ^^ i just need a code to find the nearest tree, and put it in a variable