function showBrush(%tilePosition)
{
  // get the data
  %tempData = TorqueDB.searchByInstanceWithClass("brush", "value", $gameData.brushSelection);
  %brushData = %tempData.contents[$DATA_FIELD];
  %homeTile = %tilePosition;

  // clear away previous brush image
  $gameMap.map.getTileLayer($TILE_OVERLAY_LAYER).clearLayer();

  // loop through the data pairs and set the tile(s)
  for (%pair = 0; %pair < getWordCount(%brushData) / 2; %pair++)
  {
    // get the pair
    %brushPair = getWord(%brushData, %pair * 2) SPC getWord(%brushData, (%pair * 2) + 1);

    // update the location
    %tilePosition = getWord(%homeTile, 0) + getWord(%brushPair, 0) SPC getWord(%homeTile, 1) + getWord(%brushPair, 1);

    // set the tile
    $gameMap.setMapTile($TILE_OVERLAY_LAYER, %tilePosition, highlightImageMap, 5, 0, $NO_DATA);
  }

} // end showBrush