@eduardo.camargo, the code in your original post has been incorrectly formatted, you can edit your post and use “preformatted text” instead “blockquote” to make it look right. The extended markdown syntax for preformatted text is three backticks:
```
vtkSmartPointer<vtkChartXY> chart = vtkSmartPointer<vtkChartXY>::New();
```
Without the backticks, any code posted to discourse becomes indecipherable, e.g.:
vtkSmartPointer chart = vtkSmartPointer::New();