Value of range calendar when create it doesn't show range picked


I have some problem creating a range calendar.

I create the calendar via js. Via jquery I set the val().

var dataVarco = appF7.calendar.create({
inputEl: ‘#periodoVarco’,
rangePicker: true,
dateFormat: ‘dd/mm/yyyy’
$(’#periodoVarco’).val(‘15/02/2022 - 26/02/2022’)

The problem occurs when the calendar is opened for the first time: range dates are not shown as selected on the picker

What am I doing wrong?

thank you all