[Feature] Set variables from response body

## What's the Challenge? 🌟
It would be very useful to be able to create and set values for variables dynamically, for example, from responses.

## Vision for the Solution 🚀

<img width="518" height="74" alt="Image" src="https://github.com/user-attachments/assets/6157d87c-862e-42ba-b10a-6cebd4f4ea74" />