Date Range Sping REST API parameters

I am building a rest api using the spring framework and now I have come to a point to use the Bubble’s ‘Date Range’ format as a List.
My first question
When I do my POST request, what would be the start and end parameters values ?
My second question
What format shall I send the start and end string key parameters (i.e. “yyyy-MM-dd” ) ?
I am using the DateTimeFormatter over here

Thanks :slight_smile: