function M4() local inst = mc.mcGetInstance() local sig = mc.mcSignalGetHandle(inst, mc.OSIG_SPINDLEREV) -- set to desired signal mc.mcSignalSetState(sig,1) --turn on signal wx.wxMilliSleep(1500) -- sleep for 2 sec mc.mcSignalSetState(sig,0) -- turn off signal end if (mc.mcInEditor() == 1) then M4() end