Sorry

A hard search in the forum gave me the solution
I used 'URL Generator' to create a list of 88 URLs

.../levels.php?orderBy=Date_Posted&version=2&viewStart=10
.../levels.php?orderBy=Date_Posted&version=2&viewStart=20
to
.../levels.php?orderBy=Date_Posted&version=2&viewStart=870

and then it worked nice

For pure knowledge, was there another way to solve this problem ?
Thanks