I created a Topic that used the Business Central Connector to retrieve the list of "Evaluation" Company Customers. I used a Cloud Flow to workaround an issue.
There were six customers setup in the "Evaluation" Company
I clicked the + Create|Topic|From blank menu item
I named the Topic "Customers"
I added the phrases "list customers" and "customer list"
I selected the Call an action|Basic actions|Create a flow menu item
I renamed the flow "Customer Flow"
I clicked the "Add an action" button
I searched for "Business Central" actions
I selected Environment "PRODUCTION"
I selected Company "Evalutation"
I selected API Category "v2.0"
I selected table name "customers"
I added an output
I selected "Text"
I clicked the fx button
I selected the string() function
I clicked the Dynamic content tab
I selected "body/value"
I clicked save and returned to the Topic
I added a message to display the output of the cloud flow
I copied part of the JSON
I clicked the Variable management|Parse value menu item
I selected the output of the Cloud Flow
I selected the "From sample data" option
I clicked the Get schema from sample JSON link
I pasted in the JSON I had copied earlier (updating the double quote characters).
I clicked the Edit schema link to review the result
I created a new Variable to save the result (a table)
I reviewed the Parse value action
I created a new Message.
I set the output to Concat(Topic.Var1,displayName,", ")
I removed the original Message and tested the Topic by entering the phrase "list customers". The copilot provided the response I was hoping for.