PROBLEM Expression Repeat Text layer

It's string.repeat, not just repeat. No string, no repetion.

mStr=comp("Settings").layer("Categorie 1").text.sourceText;

mStr.repeat(5)

That said, you'll probaly have better luck typing things out or repeating your text with Motion Tile and other trusted methods. Some of this fancy JS stuff isn't very reliable in AE.

Mylenium

Without workflow details, screenshots showing the modified properties of your text layer (press 'uu'), and the expression you use, it is impossible to know how you created the animation or what is causing the problem.  Embed by dragging to the reply field instead of attaching screenshots and telling us what you did, and we can probably come up with some ideas.