How to upload S3 presigned URL

[ngoquoctoandev]

public interface IMyApi
{
 [Multipart]
 [Put("")]
 Task<BaseResponse> UploadFileAsync([Url] string dynamicUrl, StreamPart stream, CancellationToken cancellationToken = default);
 }

await api.UploadFileAsync(
            presignedUrl,
            new StreamPart(new MemoryStream(fileContent), request.FileName), cancellationToken).ConfigureAwait(false);

When I set the attribute [Put("")], when running the program it does not automatically pass the dynamic url in to replace it.
it doesn't seem to work

Base address of IMyApi: https://example.com
presignedUrl: https://s3.amazon.com/xyz/abc...