Hello everyone interested by this developpers topic, specially LINDA's I would like to know if it will be, or how it's, possible from LINDA lua script to call C SDK addons functions directly by using the lua ffi library (luaJIT) ? Maybe it's already possible with the LINDA lua editor. I'am not an expert with it. Tried but the ffi library is not loaded or not include and it's throw a nil exception. this simple lua script works in IDE like ZeroBrane studio. It calls LevelD 767 SDK functions directly. This is really handy: local ffi = require("ffi") ffi.cdef [[ long LVLDSession(int action, int version); long SendLVLDCommand(int action, int value); ]] name = "D:\\Program Files (x86)\\ZeroBraneStd\\myprograms\\LVLDSDK" clib = ffi.load(name) result = clib.LVLDSession(1, 202) -- open LVLDSDK Session result = clib.SendLVLDCommand(32,1); -- send command OVRD LIGHT ON result = clib.LVLDSession(0, 202) -- close LVLDSDK Session print("LVLDSession return:" .. result) any help appreciate Marc