How to add drop down items based on a categorical array the user inputs in matlab gui app?

% Value changed function: SELECTTEAMDropDown

function SELECTTEAMDropDownValueChanged(app, event)

teamname = string(app.SELECTTEAMDropDown.Value)

disp(app.station_names)

disp(app.trucklist)

% for i=1:12

% val{i}={app.station_names{i}}

% end

class((app.station_names))

app.SELECTSTATIONDropDown.Items=app.station_names

end