Paging , Index value doesn't increase

Paging , Index Value doesn't increase, Kindly guide us.Please find the below code

Velocity Code :-

#set ($userSelection = $core_v2_widget.GetStringValue('userSelection', 'accessing'))
#if($userSelection == 'contextual')
#set ($userId = $core_v2_user.Current.Id)
#else
#set ($userId = $core_v2_user.Accessing.Id)
#end
#set ($query = "%{UserId=$userId}")

$query.Add('PageSize', $core_v2_widget.GetIntValue('pageSize', 5))
$query.Add('PageIndex', $core_v2_ui.GetCurrentPageIndex())


#set ($pointTransactions = $core_v2_pointTransaction.List($query))

$core_v2_ui.Pager($pointTransactions.PageIndex, $pointTransactions.PageSize, $pointTransactions.TotalCount, "%{ PagedContentFile = 'List.vm', LoadingIndicator = 'true', LoadOnAnyHashChange = 'true' }")