Calling a custom library that is async Task

Epicor ERP 10
,
1

Hey

so my custom library assembly makes a post to UKG and needs an async Task to do that. The Task has a return value of success or fail from the endpoint REST service.

If i dont use the async & awaits, the code deadlocks.

Im able to reg results in Visual Studio because i can call the code with await but i cant seem to do the same with Epicor. Here is my code

Main() in Library

 public async Task<string> Main()
 {

     //call for a token
     var token = await ApiClient.GetAccessToken(username, password, clientId, clientSecret, urlToken);

     //Post the data if a token is received
     if (token != null)
     {
         var result = await ApiClient.PostJsonData(token, dt, urlPost);
         string res = result + $" with token '{token}'";

         return res;
     }
     else
     {
         return token;
     }
 }

Caller in test project (Visual Studio)

EpiTo epiTo = new EpiTo(username, password, clientID, clientSecret, urlToken, urlpost, dt);

submit(epiTo);

private async void submit(EpiTo epiTo)
{
    string Result = await epiTo.Main();
    txtPostResult.Text = Result;
}

How can i call the library method Main()) and get the return result back? Its works as expected in VS

Thanks