Manim: Change size of text after creation

Question

class Bla(Scene):
  def construct(self):
    t = Text("Hello world")
    self.add(t)
    self.wait()
    t.size = 100
    self.wait(2)

I know that color is a parameter for the constructor, but how can I change this attribute after the text is already created?

For me, running this class leaves the text fixed.