How to correctly apply datedif function in kobo form

[Savechilds]

Buenas tardes no se mucho de programación necesito que dos fechas que estan en formulario Kobo se resten e indique los dias resultantes en otra pregunta del Kobo automaticamente al tener diligenciados los dos campos de fechas

[Kal_Lam]

@Savechilds, you could do it as outlined in this post discussed previously:

Calculate number of days between 2 dates

@luswetiopicho, you could have a look at the sample shared below, the exact copy of what @Xiphware has outlined above: In the survey tab of your XLSForm: [Image 1] Data entry screen as seen in Enketo: [Image 2] Reference XLSForm: Calculate Days.xlsx (10.3 KB)