Question conditional formatting (calendar)

Question conditional formatting (calendar)

Español:
Buenas tardes, deseo aplicar formato condicional al calendario, dada la siguiente condiciones.
Si la fecha del campo menos la hoy es menor a 7 días.

Ingles;
Good afternoon , I want to apply conditional formatting to the calendar , given the following conditions.
If the field date minus today is less than 7 days.


Example:
    conditional formatting
    (
      "Test"
        {
            condition = ( (FECHA_V - zoho.currentdate) < 7 )
            format = "color:#ffffff;background-color:#489641;"
        }
    )


I await suggestions.
thank you