byte - Swig unsigned char* to short[] -

 %apply (char* string,size_t length)  {          (char* databuffer, int size)  }; 

this used convert char* byte[].

but need convert unsigned char* short[]

 %apply (unsigned char* string,size_t length)  {         (unsigned char* databuffer, int size)  };  

this apply isn't working? how can fix it?