public void setActive(int x, int y) {
		activeX = x;
		activeY = y;
		
		switch(actualRole)
		{
			case Leader:
				if (cells[activeX][activeY].valueState == committedByTesterByRows || cells[activeX][activeY].valueState == committedByTesterByColumns ||
					cells[activeX][activeY].valueState == committedByTesterBySquares || cells[activeX][activeY].valueState == committedByTesterByUser) 
				{
					acceptValueLeader.setVisible(true);
					removeValueLeader.setVisible(true);
				}
				else {
					acceptValueLeader.setVisible(false);
					removeValueLeader.setVisible(false);
				}
				
				break;
			default:
				break;
		}
	}