In my Test Environment I have a Power Automate that calls a child flow "Run a Child Flow". In the dropdown I can select the Child Flow name and everything is working as expected.
Because I am importing my solution as a managed solution in the test environment I would like to set up an environment variable instead of selecting the Child Flow from the drop down. I copied the run a child flow action to my clipboard and pasted it in notepad. I can see that the code refer to: