Question: We have a setup where we capture Hotjar User ID in Google Tag Manager and then pass it as a custom dimension to Google Analytics. It's done to simply merge and cross-reference both data sources.

We used the following code to capture the User ID:

`function() {
 return hj.property.get('userId');
}`

2 days back we stopped receiving the data, even though there haven't been any changes to Google Tag Manage, Google Analytics or our Hotjar account.

My suspicion is that there have been a system update on the Hotjar end. I had a chat with their technical support, but they were unable to help me.

Would be great if someone with more experience could have a look at the following file, to see if there is a way to capturing the 'userId' value:

<https://script.hotjar.com/modules-397099a69f05558cbf66f164cffcaf65.js>

Thanks

Answer: 
Having looked at the JS file loaded by HotJar i discovered the following code

```
hj.hq.isUndefined(hj.globals.get("userId"))

```

From that i extracted the following

```
hj.globals.get("userId")

```

And this works for me as of today. Hope this helps someone else. Please let me know if it has worked in all cases.
Try this, but check with `setTimeout` until you get a value:

```
hj.pageVisit.property.get('userId').

```

OBS: In IE don't run this code... getting `undefined` value in response.