I'm trying to run a multi-stage approvals process in Power Automate. The first Approval involves multiple approvers and the Approval action returns a comma-delimited string in the body/Outcome. I can't pass that to a condition directly (see below)

So I'm wanting to iterate through the list and determine if there are any "reject" responses

I've been trying to convert the comma-delimited string to an array using a Split() to initiate an array variable. I can't seem to figure out the syntax.
copying the dynamic content for the body/outcome i get
@{outputs('Start_and_wait_for_an_approval_-_JHSC')?['body/outcome']}
how to I put that into the Split()?
Split(outputs('Start_and_wait_for_an_approval_-_JHSC')?['body/outcome'],", ") returns invalid syntax
Or is there a more elegant way to achieve the same result?
Thanks