Commit every 10000 rows

Good afteroon in my timezone.

I want to update a table , the RDBMS used is the the Sybase ASE 15.
Because the table contains almost 1 million rows , and i have to run this update in Production
environment, i want to update and commit every 10000 rows.I do not have experience in Sysbase.
Can anyone help me, if possible putting some code example

Thanks in advance
Best Regards