Reusable component > Accessing Inherited Data Model

Hello again,

Just found this topic of 2023 which is exactly what i´m talking about:

Seems Alex was able to find a workaround, but i don´t fully understand how to implement it. I enable the data container in a block of the reusable component but then… Could you please explain step by step what i need to do in the reusable component and in the page parent container (origin of the inherited data model)?

Thank you.

Regards,
Manuel