Hi there @JULIE81TARN,
Welcome to the Community! 
Before we dig deeper into this, could you please send a screenshot of the DATE column in your Google Sheets? Additionally, could you please try typing 29/5/2025 on the “Lookup value” field and try testing the Zap?
I'll be keeping an eye out for your response!
Bonjour @ken.a
je vous envoie les screenshot mais malheureusement cela ne fonctionne toujours pas
Merci d’avance pour votre aide
Moderator edit to include Google Translation of original message:
Hello @ken.a
I'm sending you the screenshots, but unfortunately, it still doesn't work.
Thank you in advance for your help.
This post has been edited by a moderator to remove personally identifiable information (PII). Please remember that this is a public forum and avoid sharing sensitive details.
voilà d’autre screenshots

Moderator edit to include Google Translation of original message:
Here are some more screenshots

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Meme avec formatter je n y arrive pas
Help
Moderator edit to include Google Translation of original message:
I can't do it even with formatting.
Help
This post has been edited by a moderator to remove personally identifiable information (PII). Please remember that this is a public forum and avoid sharing sensitive details.
Hi @JULIE81TARN 
So sorry you didn’t get a reply here sooner. Looking at your initial screenshot it seems like the slash (/) in between the month and year value is missing:

It looks like you’ve correctly got a / in between the Date Day and Date Month fields though.
Can you try adding a / in between the Date Month field and Date Year fields and let us know if that fixes it?