src/Row.php
public function set($name, $value)
    {
        if (!array_key_exists($name, $this->row)) {
            $this->addField($name, $value);
        } else {
            $this->row[$name] = $value;
        }
        $this->informChanges();
    }
public function set($name, $value)
    {
        if (!array_key_exists($name, $this->row)) {
            $this->addField($name, $value);
        } else {
            $this->row[$name] = $value;
        }
        $this->informChanges();
    }
Set a string value to existing field name
@param string $name
@param string $value