Visualization of path lines
 

Hi Everybody,
I have to visualize the pathlines of the flowing media in a 3D domain.
the only problem I have, that I would like to see less path lines, than appears :(
I can reduce the number of the pathlines by skipping them, however the maximum number of skip is 200. This means, that only every 201th pathline is visualized.
Is there any trick to see less pathlines, or even only one?

Thanks in advance,
L