Why are my annotations not saved?

[delta2golf]

Annotation is added, but it is not saved, is there any save function that I am missing?

qp = QuPathProject(project_path, 'r+')

image = qp.images[4]

square = Polygon([[0, 0], [0, 1000], [1000, 1000], [1000, 0]])

image.hierarchy.add_annotation(square)

[ap--]

Hello @delta2golf,

You need to call qp.save() or use QuPathProject in a context manager.