How to export stl file for each structure?

Hello

I have some problem using the 3D slicer
Trying to export contoured structures in segments to STL files.

I want to create an STL file for each OAR such as Bone stl file, brain stl file, eye ball stl file…
But it’s not working well. Only one large STL file containing bones, eyeballs, and brains is exported… Please tell me how to create each STL file for each OAR.
If you reply to my email (dnssll1009@naver.com), I will be able to check it easily, thank you.

Thank you.

Capture|690x367](upload://s3s4i2sDE6yzTxxNaOunvxbP99Z.jpeg)

Uncheck “Merge into single file” option if you want don’t want all segments to be exported as one single merged STL file.

If you reply to my email …, I will be able to check it easily, thank you.

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