Cronjobs - change indexing interval

[BKH]

Hello,

for testing reasons i tried changing indexing interval.
I played around with this line:

5,35 * * * * /usr/local/libexec/piler/indexer.delta.sh

I changed minute an hour to differnte values, but could not figure out
to get it in a working state.
Indexing should take place e.g. every 10 minutes.
How can i achive this?

Thanks :-)

BKH