I'm building an app that, on default, sets date_input and selectbox options dateoption = st.sidebar.date_input("Select Date", value=get_previous_business_day(dt.date.today())) nameoption = st.sidebar.selectbox(f"Select from {name_count} names", individual_names.NAME.values.tolist(), index=None, placeholder="Name") The user can manually select a date and a name from the options. I now have added functionality where the app's link can be embedded with parameters, so the dateoption and nameoption can be prefilled. However, I am struggling with how I can force select the two variables. This is what I'm trying: params = st.query_params.to_dict() if 'name' in params: nameoption = params['name'] # This did not work, and I also tried selecting the value of the index to place as the option but that just created another nameoption selectbox right below the actual one #st.session_state.nameoption = individual_names.NAME.values.tolist().index(params['name']) if 'date' in params: # This doesn't change the selection dateoption = datetime.strptime(params['date'], '%Y%m%d').date() How can I set the nameoption and dateoption fields equal to what the parameters state? Continue reading...