I am using font-family called "FFShamelFamily". I added two sub-font families as shown in the picture below. When I run my app, it uses the first sub-fontFamily: "SansOneBook" only. I try to use fontWeight to make use of the second sub-fontFamily:"SansOneBold" but it doesn't show. I mean that I want to use both of the sub-FontFamily, the bold one for titles and the other one for any text in the app. How can I do it?