Hi arnelgp,

I did open your DB, and I was surprised to see saw that your subform was presented with form header en form footer.
Mine subform has no header and footer section, just a datasheet. Its is my mistake that wrote in my earlier post that my subform was a continious form. My apologies. It was not the solution I was looking for, but still it works fine and I used it in my DB.
I think perhaps it cannot be done to expand a textbox in a datasheet itself. (I don’t know)

I created in my mainform a textbox “Omschrijving” with the control source from my table. The control I made was is 15 cm width.
So your direction to make it work in my DB was for me the solution.

Thank you !!