Slimscroll of auto pagination

I am trying to do pagination using slimscroll below given the code
but its not fiering for position bottom. please help me out.

acceptedDelivaryPersonScroll.bind('slimscroll', function(e, pos){
     console.log("Reached " + pos);
    
    if(pos == 'bottom' && _has_more_accepted_delivary_persons){
        getAcceptedDeliveryPersons(_all_start, _all_size, 1);
    }
});