B4R Question Native C: How to return an array of unsigned chars?

Sub Process_Globals
   Private Serial1 As Serial
   Private Output() As Byte
End Sub

Private Sub AppStart
   Serial1.Initialize(115200)
   Log("AppStart")
   RunNative("Test", Null)
   Log(Output.Length)
   Log(Output(0))
   Log(Output(1))
End Sub

#if C
unsigned char output[100];
void Test (B4R::Object* o) {
   output[0] = 1;
   output[1] = 2;
   b4r_main::_output->data = output;
   b4r_main::_output->length = sizeof(output);
}
#End If