point attractor error

Hi all,

I created a tower. Now i want that the facadesurface follows an attractor point. 

I am looking for something like this,but then in the other direction:

http://youtu.be/iugTfG8ng2Y

The problem is that the points does not move a lot in the direction of the point. 

The other thing is the u-count of the create surface from points component. This gives an error.

Can anyone help me?

thanks!

Mariette