How can fix the script errors?

[seojinwooo]

I read this. App Inventor Tutorials and Examples: Inject | Pura Vida Apps
and I make it same. But it doesn't work. What is the problem?

[TIMAI2]

Try spelling element correctly:

document.getElementById

not

document.getElrmentById

[seojinwooo]

But it doesn't work, too.

[TIMAI2]

Have you tested the aia project provided at the bottom of the page:

https://puravidaapps.com/inject.php

[seojinwooo]

yes
It works greats.
but mine is not.

[TIMAI2]

TimerEnabled should be set to "false" here

[seojinwooo]

ok
but it is still not working