SOLVED !!! Administrator Limit Property to 20

Hi,
To increase the Properties per page at Back-end side, please follow these steps:
1. Open file: root > administrator > components > com_osproperty > classes > property.php
2. Find:
$mainframe->setUserState('pro_list.filter.limitstart',$limitstart);
$limit = JRequest::getVar('limit',0);
if($limit == 0){
$limit = $mainframe->getUserStateFromRequest('pro_list.filter.limit','limit',20);
}

and change 20 to another number you need.
Thanks
Dam

i found it.
file is in folder administrator/component/com_osproperty/classes/property.php

search for
= $mainframe->getUserStateFromRequest('pro_list.filter.limit','limit',20);

change to
= $mainframe->getUserStateFromRequest('pro_list.filter.limit','limit',30);

and it shows you 30 properties. So thechange from 20 to 30 is the effect.

Just in case someone else like to change it.
Remember with the next update you have to change that again.