Error while using NLua

Hello,

if i try to use NLua in my Xamarin Forms Project i get the following linking error

error MT5214: Native linking failed, undefined symbol: _lua_call. This symbol was referenced the managed member KeraLua.NativeMethods.LuaCall. Please verify that all the necessary frameworks have been referenced and native libraries linked.
error MT5202: Native linking failed. Please review the build log.

The NLua Component is properly added to the system shared projects (Android and iOS).

Any suggestions?

Regards Sven.