Want to increase the length to 10 characters or more

What is the problem? Please be detailed.

What ODK tool and version are you using? And on what device and operating system version?

What steps can we take to reproduce the problem?

What you have you tried to fix the problem?

Anything else we should know or have? If you have a test form or screenshots or logs, attach here.

Can you please complete the template questions to provide a bit more information and context regarding your question. eg what do you want to increase the length of? for what purpose? what tool(s) are you using? etc