Leafo\ScssPhp\Node\Number::offsetSet PHP Method

    public function offsetSet($offset, $value)
    {
        if ($offset === 1) {
            $this->dimension = $value;
        } elseif ($offset === 2) {
            $this->units = $value;
        } elseif ($offset == -1) {
            $this->sourceIndex = $value;
        } elseif ($offset == -2) {
            $this->sourceLine = $value;
        } elseif ($offset == -3) {
            $this->sourceColumn = $value;
        }
    }