Filter with or condition

Any help please I want to do filter with or condition. the filter : if date_survenance or date_fin between two given dates (first date , second date) I do this filter but doesn’t work

filters['date_survenance_evenement|date_fin_evenement'] = ["between"[first_date,second_date]]; 
frappe.route_options = filters;
frappe.set_route("List", "Evenement");