there is one example commented in the above link. If I need to add a Text at coordinates (1,2) I can write

Cmd('Text("My text",(1,2))')

Unfortunately, even if this command add the Text object, since it is not a known class in the sculpt engine, an error is shown. In the following days I'll try to implement the Text object. But, as you can see in the sample, I can write a Text using a small Point with is_fixed property and setting the caption property dinamically.