Instead of posting images on other sites, from where they're liable to disappear, then posting links here, please post them here, which you can do via the paperclip symbol on the 'Go Advanced' tab at the bottom of this screen.

If you want a table without any of the 'Reduction de la prestation' row to appear when {MERGEFIELD Redage1}= 0, then you'll still need to have at least two tables. It would also be much easier to help you if you attached the actual document to a post instead of screenshots...

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]