Remove global dupe of OreVeinwrecks & Supplycratewrecks

[rpg4e]

Is it possible to adjust oreveins & supplycrates?

Problem:

If i remove a supplycratewreck or an oreveinwreck in game other players are still able to see the wrecks and to remove them again.

How to fix this dupe?

Already tried this: 

and this: 

But none of both worked as suggested.

So where to find the script of standardwrecks ( old cars, helis ect... ) to use them to fix this? Or better: Is anyone able to make a working script for that problem?

[Dayz Epoch 1.0.5.1 - Chernarus]