How to rotate into a volumetric model in GID

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Hello, I have a question about constructing a cylinder in gid.I have now created a rectangle in Gid (Figure 1), and then using Gid's copy operation, I want to rotate it into a cylinder. The specific settings are shown in Figure 2, where the rotation angle is set to 360°, but the result did not form a cylinder (Figure 3). I would like to ask what could be causing this?