AddItem command doesn't accept negative values

Hello, I'm working in a mod that adds armor boots on containers around Morrowind through a StartScript. So, I've read on UESP that if you use additem with negative values they will restock only with actors inventories. Of course Morrowind don't work because you have at least have entered a cell with such containers and actors to the StartScript work. https://en.uesp.net/wiki/Morrowind_Mod:AddItem#Count

The AddItem part of script dont't work on OpenMW because some items have negative values to add restocking items on containers unlike vanilla that add thousands of that items instead the right number I've wrote.

UESP says that negative values with AddItem on merchant should add restockable items but will not work on containers. My request is to fix how containers and merchants work when receiving AddItem commands with negative values.