Pass Url Parameters with Bricks Popup into a WS Form?

Does anyone know how this can be done? I have a select list that I want to be automatically chosen when a price clicks on a specific button. For ex. I have a 3 tier pricing table. I have 3 items in a drop down select box in 1 form. I’m trying to make it so that when you choose pricing tier 2, then it loads the select box in the ws form that’s housed in the popup.