Hi Prashant T, according to your reply above I suppose that you have finally find a solution for the “Scroll mouse down or scroll mouse up event”.
I have exactly the same problem like you had… 
I will be more than happy if you can copy paste the exact code (full code from A to Z) in order to copy paste to my wix site.
Sorry for asking but I am amateur to wix and I don’t know coding
Thank you in advance Lily 