This is an attempt to describe how to pass data to Gutenberg InnerBlocks when using ACF and ACF Composer. I can not share complete code examples ATM since due to reasons that I can not affect.
We will be using Gutenbergs Context. It is not 100% straight forward or easy to explain but in short, a block can provide context to its inner blocks and use context that is passed down to it.
Disclaimer: I am writing this while focusing on other things so please forgive (and tell) me if anything is unclear. It probably helps if you have some deeper understanding of how ACF and ACF Composer works.
In order to do this you need to use ACF 6 which is in alpha 2 at the time of writing this.
ACF composer needs to be updated with the changes in [this commit](https://github.com/Log1x/acf-composer/c