Get error message when "BAD error_here" is sent from imap4 server

I have a client TIdImap4

and I sometimes get it from the imap server:

C3 BAD Mailbox parameter is invalid.

      

        
        
        
      

    

I was able to fix the request from my client, but the only way I could read this error message was in the indy function:

function TIdIMAP4.GetInternalResponse(const ATag: String; 
  AExpectedResponses: array of String;  
  ASingleLineMode: Boolean; ASingleLineMayBeSplit: Boolean {= False}): string;

      

        
        
        
      

    

but when the result function TIdIMAP4.StatusMailBox(const AMBName: String; AMB: TIdMailBox; const AStatusDataItems: array of TIdIMAP4StatusDataItem): Boolean;

is False, I don't know how to access the error message. I've tried properties:

- imap4Client.LastCmdResult.Text.Text 
- imap4Client.LastCmdResult.FormattedReply.Text

      

        
        
        
      

    

but there is no error message in them.