The tank is shot, then the helicopter spawns and is on approach and all of a sudden it's gone.
Thus no NPCs are dropped off

Anyone have an idea what this may be due to?

Complete rewrite of the current plugin is out for testing, you can find it under the updates and select the beta branch.

Thank you very much, the beta version works

Merged post

But now the tank no longer drops boxes

Please make sure you have deleted the old config, lang and data file working fine here.

https://umod.org/community/bradley-guards/47550-beta-branch

yes, that was my mistake

Thanks for your help,it works again