How the queue would bring a error like that

[supermanPunch (Arpan)]

Hi @vivachen ,

As mentioned privately, do check by re-typing the expression if the error resolves or could you check the below post, it has an alternative method of accessing the value :

Error BC30057

I just had the same issue. And what solved it for me was a very curious attempt. I created a message box right before the assign, with the following command, and the Issue disappeared: queueIt.SpecificContent.GetValueOrDefault(keyname).ToString

When also re-typing make sure you remove the expression first, Save, and then Re-type the Expression.