Last updated: November 29, 2024

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# New features: Assembly Replays & cost tracking

![Tim Koschützki](/assets/images/teammates/avatar-tim-kos-1.jpg?dpl=dpl_6nhQNS5wkVkPZWuKMzXcWrAHNJL5)

**Tim Koschützki**

Co-founder · Berlin, Germany · Show bio

[](https://x.com/tim%5Fkos)[](https://github.com/tim-kos)

We are happy to announce that as of today, you are able to programmatically trigger Assembly Replays and Notification Replays. Both functionalities are now available through both our website and API calls.

For more details about this functionality, please see [here](/docs.md).

Furthermore, it is now also possible to pass custom variables into your Assembly Instructions by attaching a key `fields` to your Assembly hidden `params` field's JSON. Please read about this [here](/docs/topics/templates.md#overruling-templates-at-runtime).

And we also have another feature to announce that plenty of people have been patiently waiting for: on the Assembly page, you can now see how much the Assembly costs you in terms of data towards your plan. 😄

We hope you will enjoy these new features. We'll certainly have more for you soon!

[#api](/blog/tags/api.md)[#assembly](/blog/tags/assembly.md)[#workflow](/blog/tags/workflow.md)

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