Hi @Anonymous,
Could you please share a screenshot of your issue?
Further, couldn't you use the "Data Operations"-> Compose action within your flow?
I have made a test on my side and don't have the issue that you mentioned. My flow's configuration as below:

We don't need an something specific to work with these actions of Data Operations services, please consider take a try to clear the cache of your browser and re-create the flow on your side to check if the Compose aciton is available for you.
Best regards,
Kris