Net Core API HttpPost with int array parameter

Question

I am building application and one of the features is to provide ids so it could be later processed by API. I have created another Net Core API HttpPost method, like below:

 [HttpPost("addapplication")]
 public IActionResult AddApplication([FromBody] int[] invoiceIds)
 {
 int newApplicationId = _applRepository.AddApplication(invoiceIds);
 if (newApplicationId == 0)
 {
 return BadRequest();
 }
 ClientApplicationDto applicationData = GetApplication(newApplicationId);
 return CreatedAtRoute("GetApplication", new { newApplicationId }, applicationData);
 }

Pretty similar to how I built another HttpPost. However when trying to check it with Postman with below body:

{
 "invoiceIds": [5, 6]
}

I get error:

{
 "type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",
 "title": "One or more validation errors occurred.",
 "status": 400,
 "traceId": "|f14e8651-4e050cec0f913d32.",
 "errors": {
 "$": [
 "The JSON value could not be converted to System.Int32[]. Path: $ | LineNumber: 0 | BytePositionInLine: 1."
 ]
 }
}

What am I doing wrong?

Answer 1

Well anwser was simple as wrong formulated JSON:

[5,6]