Problem Installing Upgrading/Framework

I’m Elastix 1.0.4 version.
When I do to opgrade the frameworks to appears a error:

“error copying framework files:
‘cp -rf’ from src: ‘/var/www/html/admin/modules/framework/htdocs/*’ to dst: ‘/var/www/html’…details follow
cp: cannot create directory /var/www/html/_asterisk': Permission denied cp: cannot create directory/var/www/html/recordings’: Permission denied”

I dont have idea of the reason of this error.
Please help me!
I can’t upgrate to version 2.4 of FreePBX because i’m afrain to CRACK all Elastix system and need to reinstall. PLEASE i’m from argentina and my english is very bad.

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