'Cannot get list object from Swagger

I have created a swagger to study and I have a problem.

My input in swagger page:

{
  "content": "string",
  "productId": 0,
  "postId": 0,
  "statusIdDetail": 0
}

and my object is:

public List<PostDetailVm> DetailPost { get; set; }

public class PostDetailVm
    {
        public string Content { get; set; }
        public int ProductId { get; set; }
        public int PostId { get; set; }
        public int StatusIdDetail { get; set; }

    }

My API:

[HttpPost("CreatePost")]
[Consumes("multipart/form-data")]
public async Task<IActionResult> CreatePost([FromForm] PostCreateViewModel objEmp)

When I executed, the DetailPost is count = 0, can anyone help this situation?



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