Pass a parameter  to a 'portal page'

I want to pass a parameter to a 'Portal' page. This parameter is a the title of the page. I found that in the page's properties a 'parameter' tab is there where we can add a parameter. But I don't know how the page will read the value of this parameter & display it.
Thank you for your help.
Jayasree

i am trying to pass the parent_id as a parameter to a portal page but am not able to... i can add it to the list of in parameters to the PL/SQL based parent id but when i add the parent id to the url then i get no result... i created a custom attribute for the parent id since there is no attribute build other then page group and page id... when I set the Parent ID attributes default value in the attribute properties of the item type based on PL/SQL it just brings back results for the default value and if i pass a different value for ithe parent id i dont get the correct result I get the result for the default parent id.
I am using the followin url to pass the parent id
http://localhost:7778/portal/page?_pageid=76,87832&_dad=portal&_schema=PORTAL&parentid=22223

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    "Ajay" <[email protected]> wrote:
    >
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