How to have multiple parameters for body in Swagger

So I'm having problem with how I pass my data.

This is my WCF rest method

 [WebInvoke(UriTemplate = "/GetCustomFieldValues", Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)] Dictionary<string, Object> GetCustomFieldValues(string pwaUrl, string projectUid, List<string> customFieldNames); 

On Swagger this is my declaration for it

/GetCustomFieldValues: post: parameters: - name: Param in: body description: The custom field value you want to get required: true schema: $ref: "#/definitions/GetCustomFieldValues" responses: 200: description: Getting custom field value using name summary: GetCustomFieldValues description: GetCustomFieldValues operationId: GetCustomFieldValues definitions: GetCustomFieldValues: type: object properties: pwaUrl: type: string projectUid: type: string customFieldNames: type: array items: type: string 

When I used my Advanced Rest Client or Powershell the method works, the only difference is how I assemble the body.

For Swagger I need to use a definition since I can't do multiple parameters on body.

I'm also putting this at the top of the swagger

schemes: - http consumes: - application/json produces: - application/json