mistake in wanting to get data from a column

tumbero_x

Hello friends!
when running this code gives me the following error

Uncaught TypeError: Can not call method 'toUpperCase' of undefined
I'm going crazy and can not be
someone could help me?
greetings and thank you very much
[code] "fnDrawCallback": function() {
$(".fr").click(function() {
var position = oTable.fnGetPosition($(this).parents("tr"));
var id2 = oTable.fnGetData(position)[0];
alert(id2)
});
}, [/code]

tumbero_x

Solved!!!

[code] "fnDrawCallback": function() {
$(".fr").click(function() {
var pos = oTable.fnGetPosition(this.parentNode);
var id2 = oTable.fnGetData(pos)[0];
alert(id2)
});
}, [/code]
greetings