real add and real delelete rows in the grid

hello

i use the example "\examples\grid elements - rows\add delete row.htm" for add and delete rows in the grid

we need to get the data visible in the grid after add rows or delete rows

how i get the real data in the grid, because if i show the content of the grid, this not shows the correct data

i put another button "show content" that show the data in the grid with this function

var cadena='';
for ( var i=0; i <obj.getRowCount(); i++)
{
for (var j=0; j< obj.getColumnCount(); j++)
{
cadena = cadena + " * " + obj.getCellValue(j,i) + " * ";
}
cadena = cadena + "###"
}

alert(cadena)

*******************************************

cadena shows bad data, show rows that i deleted

this is all for now

thanks

i forgot other thing

i use other examples in the forum, that uses a internal array associated to the grid

var myData = [["","",""]];
...
...
obj.setCellText(myData);
...
...

but get the same result, the data show both the grid walking as the associated table are not the same as seen in the cells of the grid