Question

I am trying to create a button that increases a numeric property in a table by 1, but I receive an error message stating : prop n’est pas défini. [0,4] La formule ne peut pas avoir un type de retour « inconnu ». Le type de retour autorisé est : nombre. [0,23]

the formula that use : prop("Mensualités") + 1

Is the help by AI of notion who tell me to do like this but it don't work

Answer 1

Imagine you have the property "Mens" and it is a number.

You have any number.

1- Create a property using button.
2- Edit the button.

Trigger: When click
Action: Edit property > Mens > Formula.
Formula: This page, dot, Mens + 1 (This page.Mens + 1)

That will do exactly what you need.

Hope this helps.