I tried your function... it works.
So i guess the problem is in my function parameters.
=CoutTotal([Txt_Cout1].Texte, [TxtCout2].Texte, [TxtCout3].Texte, [TxtCout4].Texte, [TxtCout5].Texte, [TxtCout6].Texte)
This is in my ControlSource property (of a textbox)
Is it correct??
(btw, i use a...