How do I limit a Zones use of memory

Hello
I have a number of non-global zones running, and I would like to prevent these zones from exhausting the SWAP thereby rendering every zone inoperable.
I have activated rcapd to take care of the RSS part.
Someone mentioned using process.max-address-space .
I must have must have misunderstood something because the following does not seem to have any effect:
system:0::::process.max-address-space=(privileged,536870912,deny)in /etc/project
prctl -n process.max-address-space -i process $$
process: 7407: tcsh
NAME    PRIVILEGE       VALUE    FLAG   ACTION                       RECIPIENT
process.max-address-space
        privileged      16.0EB    max   deny                                 -
        system          16.0EB    max   deny                                 -Does anyone have any suggestions on how to go about this, or documents to read?
Thanks
Henry

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Please make at least a spell check before asking questions in the internet. Your text is difficult to understand.
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