swagger-ui auto replaces escaped characters like "" - vb.net

Question

Basically I am using .Net VB to pass in a JSON String format into Swagger-UI for Response Body.
But the Response Body displays characters like "\"
I want to get rid of that.
my Json string looks something like this in VB
sJSON = "{""csid"":""" + customer.CSID.ToString() + """}"
The Current Result is:
{\"csid\":\"1234\"}
Desired Result is:
{"csid":"1234"}
New Edits:
The string is generated from my custom print JSON class
It's the default method that came with the Controller class I mimic from HomeControllers.
I am guessing it needs to set the "application/JSON" content type?
Public Function GetValue(ByVal id As Integer) As String
Return PrintJSON()
End Function
Function PrintJSON()
Dim sJSON As String
' Begin JSON object
sJSON = "{"
' Timestamp
sJSON = sJSON + """date"":""" + DateTime.Today().ToShortDateString + ""","
sJSON = sJSON + """time"":""" + DateTime.Today().ToShortTimeString + ""","
' Return list of parameters in a JSON object
sJSON = sJSON + ""
sJSON = sJSON + """record"":["
For Each customer In Customers
sJSON = sJSON + "{"
sJSON = sJSON + """csid"":""" + customer.CSID.ToString() + """"
sJSON = sJSON + "}"
If customer.Equals(Customers.Last) Then
sJSON = sJSON + "]"
Else
sJSON = sJSON + ","
End If
Next
sJSON = sJSON + "}"
Return sJSON
End Function

Answer 1

Ok, I found the solution. The GetValue method can just return a data transfer object class.
Swagger will automatically display the class in JSON format.
I sure hope this was explained clearer in the Swagger tutorial.