Need Joomla app/plugin that deducts Jomsocial points and add to jPayplans wallet

I need a plugin or app that allows me in the backed (as admin) to determine how many Jomsocial points are worth a dollar. In the frontend the user should be able to exchange his Jomsocial points (as long as he has any left) into the wallet (calculating the "exchange value" set in the backend). $50 for this plugin which needs to be finished in 2 days.