Can I extend my tourist visa in Nonthaburi for 60 days instead of just 30 days?

Hello to everyone, today I was looking for information about the extension of visa for 30 days ( tourist) in Nonthaburi. On the website of the immigration office of Nonthaburi I found a link where one can apply for the extension online and then after payment get an appointment for the stamp of the extension in passport. It was Interesting that you could give your days of extension manually in the adequate field.

Does anyone have any experience with getting another 60 days extension or no matter what you write there you will get only 30 days? I wrote 60 days and this was not rejected on the site.

Thank you for your information in advance.

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if you have exact information. 🙏😊🙏