how to change size of the main button

hey.thanks for this project. I used FloatingActionButton.SIZE_LARGE but I wantb bigger size for main button . I don't know what to do? Is there a way to do that? setIconSize is the method for doing that . I use different numbers but doesnt change.  I use FloatingActionButton.SIZE_LARGE but I want Bigger Size. I Wish there were more sizes . I appreciate any help .