Thank alot brucevde

You are the best. I have asked in many forums but no one knew what is the problem or how to solve it. But with the coding you gave solve my problem. Thanks alot. After stuck in this part for so long now i can move on to the next part which is the colour of the nodes.

Thanks you so very much you are the best.

Thanks to all you guys who try to help me too. Thanks alot....