'scrollTo' method is not working in datagrid

[agulas]

I'm using 1.3.3 and the scrollTo method of datagrid is not working at all.

my source code is

Code:

function reloadGrid() {
    $('#dg').datagrid('scrollTo', 18);
}

the 'dg' is datagrid id and pagesize is 20. but nothing happens when I click the reload button to call reloadGrid().
Did i use this method wrong?

[stworthy]

Please confirm if the specified row exists or not. If the row does not exist, nothing happens.