Eagle - Layer Farbe ändern

string file;

string text;

board(B) { 

//  file = filedir(B.name) + "Place_layer_cycle.scr";

  file = "test.txt";

  output(file , "wt")  {

  // cycle door 4 standen

    B.layers(L) 

    {    

      if (L.number == LAYER_TOP) printf("Layer %d, Name %s, Color %d \n", L.number, L.name, L.color); // geht

      if (L.number == LAYER_TOP) L.color = 7;  // geht nicht

    }   

    printf("fertig\n");

  }

}

exit("");