Hello all... This may be a rather straight forward answer, but I am at a loss and was wondering if someone with a bit more experience can help me. 

When I search for products to add to a purchase order, I would like the default filter to already be set to "By Current Vendor". 

I was able to filter out all of the noise already by setting the default to show only the "Can be Purchased" products. But I would much rather be able to only see just the products that I purchase from the vendor that has been selected. 

I know that there is a customer filter that will allow me to filter "Vendors > Is Equal To"... But I would like to pass some kind of value in here that is something like "currentVendor()" or something of that nature. 

Is this possible?