Dynamically Change Workspace Id/Name When Pulling Data Flow

Not sure if this is resolved, or if my response will help. But I have created a template pbix file on my GitHub account:
https://github.com/JamesCameronMathews/PowerBI_Stuff/blob/main/PBI_Dataflow_Template.pbix 

This approach allows parametric management of the selected datasource.

-Paramaters (query group):

-- workspaceName (parameter): Parameter controlling the workspace containing the target dataflow

-- dataflowName (parameter): Parameter controlling the target dataflow

-- Workspace (list): List of available workspaces (auto-populated)

-- Dataflow_Name (list): List of available dataflows (auto-populated)

-- DataflowSelector (table): Table with the id for the target workspace and dataflow, dependant on parameters selected

- YourTable (Table): Example query showing how to use target a table in your dataflow using your above