Child jobs control

Hi!

I have a job chain with two steps. The first one launches another job (RV60SBAT abap) and the second one should start after finish the job is launched by RV60SBAT. How can I control, with SAP CPS, the start of the second step? An event at the end of the first step is not valid since it only means that the son job is launched but not finished.

Thanks,

Antonio