You’ll have to click 'done ’ on the app’s home screen to initialize this value. This should clear up the error. New users and new instances of the app wont experience this.
OK - pushed new version to prevent this issue.
Thanks… working great now.
I see line 110 still need to be change to what Gary had recommended:
title = "Code (Must be ${lock.latestValue('pinLength')} digits)"could… always submit a PR. 
Hi Erik,
Installed ver 4.0, can’t access user settings any more, getting this error,
error java.lang.NullPointerException: Cannot invoke method length() on null object @ line 414
Thanks
Nagui
Thanks. Try v4.0.1.
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Thanks for all your work and effort with this app! BTW…contacted support yesterday because my locks don’t show the battery levels and they recommended installing your app and device!!! I tried and ran into the same problem as @Nagui_Anis mentioned. I’ll be sure to give v4.0.1 a try tonight, but wanted to drop by and say thank you! 
Try to re-pair your lock with hub within a foot of the lock. That worked for me when i had this problem.
I just submitted a PR to add a per user notification when code is used. I don’t want to be notified when i use my code.
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I tried everything BUT that! Was getting ready to reset my locks, but I’ll give your suggestion a try…before I reset my locks. Sorry, what is a “PR”?
Hi Erik, 4.0.1 fixed the issue.
Thanks again for your prompt efforts
A Pull Request on github.com. Its how you submit code changes to a repository.
Got it. Thank you, still learning…
HA! One of my locks is NOW reporting the battery level! (and I didn’t do anything to it, but changed the device type yesterday)
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Man sounds like its about time I update and re-donate. Sounds like we’re getting some great enhancements to an already really nice app.
Finally, after a week, removing the battery, waiting, praying, cussing, cursing… we have a battery status of 100%. Unfortunately, I’m not sure which of the above methods worked…
Sounds like…it may not be “magic” but a back-end issue, if we all are starting to see the battery levels showing up mysteriously TODAY!
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Wow! That’s good to hear that they recommend it. I guess the pressure is on to keep improving!
It is pretty suspicious that everyone is getting battery updates today. Pretty suspicious indeed.
I thought you may like to know that. Anyway, I’m pretty sure now that is a back end issue, as my other lock is showing the battery level and I didn’t do anything to it in the past 7 days…
Ooh, I will try this tomorrow. Crossing my fingers.
Side note: lock stopped responding tonight so hopefully that will be fixed as well. At first I could get it to lock or unlock about half the time, but I’ve got a 0% response rate now.
That’s exactly what happens if the lock is to far away when you pair it. During the paring process not all transmission are received so some functions will not work.
I wish ST would/could detect a bad zwave paring and tell you to try again. But this may be a limitation of zwave and out of STs control.
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