activities issue with name

This is a (Bug Report / Feature Proposal)

how do i specify activities with profile something like

activities:
- myTask-${opt:stage, self:provider.stage}

This is the error am getting An error occurred: ApprovalsWorkflowMachineStepFunctionsStateMachine - Invalid State Machine Definition: 'SCHEMA_VALIDATION_FAILED at /WaitForUserDecisionState, SCHEMA_VALIDATION_FAILED at /WaitForUserDecisionState, SCHEMA_VALIDATION_FAILED at /WaitForUserDecisionState, MISSING_TRANSITION_TARGET at /' (Service: AWSStepFunctions; Status Code: 400; Error Code: InvalidDefinition; Request ID:).

Description

its throwing error when i do this
Pleas ehelp
For bug reports:

• What went wrong?
• What did you expect should have happened?
• What was the config you used?
• What stacktrace or error message from your provider did you see?

For feature proposals:

• What is the use case that should be solved. The more detail you describe this in the easier it is to understand for us.
• If there is additional config how would it look

Similar or dependent issues:

• #12345

Additional Data

• Serverless Framework Core Version you're using:
• The Plugin Version you're using:
• Operating System:
• Stack Trace:
• Provider Error messages:

Start by reproducing the reported activities configuration using the shown stage-variable expression and capture the generated AWS Step Functions definition. Compare the resulting definition with the validation errors at /WaitForUserDecisionState and the missing transition target. Done means determining whether this configuration is supported and documenting or correcting the issue with a reproducible case.