# Can't include tracker via Google Tag Manager

{% hint style="info" %}
Including UXWizz through Google Tag Manager is not recommended. \
Google Tag Manager is blocked by ad-blockers, which means that UXWizz will fail to load too.
{% endhint %}

### Problem:

Including the UXWizz tracking script via Google Tag Manager doesn't work.

{% hint style="danger" %}
**Uncaught TypeError: Cannot read property 's' of undefined at ust.min.js?v=3.4.2:2**
{% endhint %}

### Cause:

The issue occurs because when you include multiple scripts via GTM, the include order is not guaranteed.

{% code title="The default way to include UXWizz" %}

```markup
<script>UST_CT = [];UST = { s: Date.now(), addTag: function(tag) { UST_CT.push(tag) } };UST.addEvent = UST.addTag;</script>
<script src="https://your.uxwizz.com/server/ust.min.js?v=x.x.x" async></script>
```

{% endcode %}

{% hint style="info" %}
**With Google Tag Manager, the second \<script> tag might be loaded before the first one.**
{% endhint %}

### Solution:

A quick solution is to use a single script tag and load ust.min.js dynamically like this:

{% code title="Single-script way to include UXWizz" %}

```markup
<script>UST_CT = [];UST = { s: Date.now(), addTag: function(tag) { UST_CT.push(tag) } };UST.addEvent = UST.addTag;
var ust_min_js = document.createElement("script");
ust_min_js.src = 'https://your.uxwizz.com/server/ust.min.js?v=x.x.x';
document.head.appendChild(ust_min_js);
</script>
```

{% endcode %}

{% hint style="warning" %}
Make sure to replace **`https://your.uxwizz.com/server/ust.min.js?v=x.x.x`** with the actual URL to your tracking file.
{% endhint %}