I'm using qt creator and i want to insert double spin box value into 11th line 19th column of my text file. I don't know how to set up the line and column.
Can someone help me??

void MainWindow:n_doubleSpinBox_6_editingFinished()
{
QFile file("D:\\filename");
if (file.open(QIODevice::ReadWrite | QIODevice::Text))
{
QTextStream in(&file);
QString text;
text = in.readLine();
in << QString::number(ui->doubleSpinBox_6->value());
}
file.close();

This is my text file

parameter PW_x = "i want to insert the value here"
parameter PW_y =
parameter PD =
parameter PC =