Create a Wordpress Function

This function would be based off two plugins. WCVendors and AffiliateWP. CURRENTLY 1. On WCVendors, I have set a commission to give vendors e.g 80%. 2. On AffiliateWP, I have set affiliates rate to 40%. 3. If a product is $100, and a sale is made via an affiliate, WCVendors gives the vendor $80, and AffiliateWP gives the affilate $40. This doesn't add up. GOAL I would like the affiliate rate to be taken from the vendor commission. that is, "wc commission = wc commission - affiliate rate". This means that for our example above, WCVendors should give the vendor $40 NOT $80. I have created a file containing the functions from both plugins, so all you have to do is create a filter I can use in [login to view URL] The way I want it to work, AffiliateWP shouldn't be touched at all, instead it's values should be used to modify the WCVendors commission. Include 'harambe' in your bid.