Hi, Thierry.

Thanks for reaching out to us and sorry for the late response!

If I see this correctly, you want to use calculation functions in a formula/calculated column?

If that is true, unfortunately, that is not possible;  here are the limitations to know when using calculation formulas, and calculation columns combined:

1. One formula column cannot be used in another. This limitation can be avoided by using nested calculations.
2. In tables with server-side processing formula, columns cannot be used for grouping, filtering, and sorting. Basically, formulas are calculated only for the rows that are immediately visible; Therefore, it’s not possible to “know” the values for currently invisible rows. Please note that this also applies to the “Manual” tables, as they also use server-side processing by default. Also, of course, it is not possible to edit the cells generated by formulas in the editable tables.
3. Adding a sum in the sum row for formula columns is not yet supported.
4. Using calculation functions in formula columns is not possible

Please contact us further if I maybe did not understand what you need correctly; in that case, please give us more details so we can better understand what you're trying to achieve.