Hi .
I've found what was the problem.
It was this line of code: set_recursive_metatable(GT.WS[ws], GT_t.WS_t.Bofors_40mm) . Replaced by :set_recursive_metatable(GT.WS[ws], GT_t.WS_t.phalanx ) and all it's ok
You can find the corrected lua file at the bottom of the page
ara_vdm.lua