How to insert Meta keyword when we submit an article?

Can anybody help me here, i didn't find this solution in existing forum topic. I want to insert meta keyword (if possible then meta description too) when i submit new article by submit content package plugin.

Looking to some prompt response,

Re,

Hi JoomlaVogue,

I think that you need to construct the parameters of the article to do this, use JRequest::setVar('params', $params) and set $params to the parameters string!

Cheers
Max