Hi Pilou,

> I am thinking about Flow function, but seems there are in the result some
> different levels between letter of a same word! :(

That's because you're using the "Rigid" option in Flow - the way the Rigid option works is it only flows one single point at the center of the object's bounding box, and uses that to move and rotate the entire object.

Since each of the curves you show there in a line of text has a slightly different bounding box, they will all end up using slightly different positions on the base curve as their base point.

- Michael