Hi Ana Andrade ,
I made a demo explaining how to add text to an image.
As you can see the image has a text
This is a bit more complex because it is necessary to have a little knowledge of css.
We give you the absolute potion. and we indicate that it is in the middle of the height 50%

Recall that an absolute should be inside a relative container

A little more information
https://stackoverflow.com/questions/57232337/how-do-i-position-text-relative-to-the-image
the example is this:
https://www.outsystems.com/forums/discussion/76843/how-can-i-use-carousel-with-images/#Post317001
Greetings