Widget Content Personalization
You can customize user content according to the criteria you specify in the Join studio. On the mobile side, to take into account audience-specific content, you can add a key/value object when sending the request.
Widget mode
<JoinStoriesView
    customParameters={[
        JoinCustomParameters = {
            "key":"value1,value2"
        },
        JoinCustomParameters = {
            "key":"value1"
        }
    ]}
/>
<JoinStoriesCardView
    customParameters={[
        JoinCustomParameters = {
            "key":"value1,value2"
        },
        JoinCustomParameters = {
            "key":"value1"
        }
    ]}
/>
Language
By default, the phone's language is taken into account in the request. However, you can override this value:
<JoinStoriesCardView
    customParameters={[
        JoinCustomParameters = {
            "language":"English,French"
        }
    ]}
/>