sql component and delay

Hello,

I am trying to pull data from a database and mark rows as processed :

This is working
I am trying to use a specific delay in between each poll:

?consumer.onConsume={{sql.oracle.markPart}} ?consumer.delay=5000

How can I do both?
I tried:

It does not work.
I also try to use direct: but then I have an empty body when for my choice.

Any idea?

Thank you,

Lydie