iOS Question Set TextView Font Size With CSBuilder

There are csbuilder tutorials for:

Android: https://www.b4x.com/android/forum/threads/charsequence-csbuilder-tutorial.76226/
B4i: https://www.b4x.com/android/forum/threads/csbuilder-attributedstrings-builder.79153/

The .Size(30) tag works in Android. But I don't know about B4i. The above tutorial uses this to change font size.