Incorrect data was obtained using GetRange

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1

I inserted the data from std::vector<double> data into the cell data of the dataset, and then when I used GetRange to get the data range, range[0] was -431602080.000000

vtkSmartPointer<vtkDataSet> dataset = m_dataset.at(0);
vtkSmartPointer<vtkFloatArray> vtkTmp =
    vtkSmartPointer<vtkFloatArray>::New();
vtkTmp->SetName(phiName.c_str());
vtkTmp->SetNumberOfTuples(data.size);
vtkTmp->SetNumberOfComponents(1);

for (int i = 0; i < m_nAllCellNumber; i++)
{
    vtkTmp->InsertNextTuple1(data.at(i));
}

if (!dataset->GetCellData()->HasArray(phiName.c_str()))
{
    dataset->GetCellData()->AddArray(vtkTmp);
}

vtkSmartPointer<vtkCellData> cellData =
    vtkSmartPointer<vtkCellData>::New();
cellData = dataset->GetCellData();

int celldatanum = cellData->GetNumberOfArrays();

for (int i = 0; i < celldatanum; i++)
{
    const char *name = cellData->GetArrayName(i);

    double *range = cellData->GetArray(i)->GetRange(-1);

    qDebug() << name << range[0] << range[1];
}