> For the complete documentation index, see [llms.txt](https://cgtoolbox.gitbook.io/cgtoolbox-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cgtoolbox.gitbook.io/cgtoolbox-docs/pcg-random-assemblies/random-assembly-definition.md).
# Random Assembly Definition
This is the main Data asset you will need, it's pretty simple as it has only three entries;
* The PCG Data asset entry
* The Dictionary of variants you want to apply on the PCG Data Asset, where the keys are the target tag(s).
* The static mesh spawner settings node (which can be overridden per variant).
Variants and their target tag(s).
***
You can create a new Random Assembly definition by using the "Create Assembly Definition":
{% tabs %}
{% tab title="BP Random Assembly actor" %}
From the button on the BP Random Assembly actor:
{% endtab %}
{% tab title="From Content Browser" %}
Alternatively you can create the data asset directly from the content browser by selecting Miscellaneous -> Data Asset
And pick the BPDA\_RandomAssemblyDefinition Class:
{% endtab %}
{% endtabs %}
***
