I want to exclude everything after `categoryId=` and the `ID`. note that the ID will change everytime. 

> 
> categoryId=46097316&fg=Color&ff=GenericColor&fv=Yellow&fd=Yellow&fg=Color&ff=GenericColor&fv=Ivory&fd=Ivory&fg=Color&ff=GenericColor&fv=Cream&fd=Cream&
> 
> 
> 

I tried `categoryId=\d+`, but it will delete everything after `categoryId=`.