Modify pset size

I 'm unable to modify pset size configuration.

# poolcfg -c 'modify pset pset-app (uint pset.size = 16 )'
poolcfg: put property pset.size failed: Bad parameter supplied

Looking at the manpage for poolcfg(1) perhaps it should be:

# poolcfg -c 'modify pset pset-app' (uint pset.size = 16 )

?

You cannot modify pset.size

pset.size will change automatically when u add or remove processors to the pset