Question How to make the number of parallel executions variable

Hi everyone

I just learned about the Asynchronous Mode for launching delivery and the option "<nbMaxParallelSessions>" to limit the number of concurrent threads.
This is great but I would like to be able to change this setting according to environment (ie the machine capabilities).
I tried using a parameter as follows, but it doesn't seem to work:<nbMaxParallelSessions>${~/nbThreads}$</nbMaxParallelSessions>

Does anyone have an idea how I could manage this ?

My second point concerns the error management, as we don't seem to get the errors of the delivery in the parent process when running in asynchronous mode.
Have you done something similar and how do you treat errors in this case ?

Regards
François

Hello , à quoi sert l'éxécution paralèlle . Je me demande si cela peut règler mon problème qui est de minimiser le temps de pré intégration dans une table ( sur la table I_XXXXXX) et le temps d'intègration aussi ?
D'autre part , où faut-il insèrer cette commande : <nbMaxParallelSessions>%x{md:paramValue($this, 'NbThreads')}x%</nbMaxParallelSessions>

Merci d'avance ...

Cordialement,