SQLite Update

public boolean editHomePos(Player player, String name) {
        boolean prüfer = false;
        Connection connection = plugin.Database().getConnection();
        PreparedStatement pstmt = null;
        float x, y, z;
        x = player.getPosition().x;
        y = player.getPosition().y;
        z = player.getPosition().z;
        try {
            pstmt = connection.prepareStatement("UPDATE 'Home' SET PosX = ?, PosY = ?, PosZ = ? WHERE Creator= " + player.getUID() + " AND Name= '" + name + "'");
            pstmt.setFloat(1, x);
            pstmt.setFloat(2, y);
            pstmt.setFloat(3, z);
            pstmt.executeUpdate();
            prüfer = true;
        } catch (SQLException ex) {
            System.out.println("[AktiveSign - SQLite-ERR] editHomePos");
        }


        return prüfer;
    }