When does "Max Backups" in backup storage properties take effect?

[magicfab]

I've changed Max backups in storage properties and it still complains I can only keep X backups (older value).
How can this value be increased and effective immediately?

 

[wolfgang]

Hi,
this should instant apply.
Which version you are?
pveversion -v

try to restrart
pvestatd
pvedaemon