Checking if DBAdvMemo is empty

Hello, I have a DBAdvMemo field in my form. Before Posting data I want to check if the user has inserted text, i.e. the memo is not empty. How can I do this? I tried with DBAdvMemo.Lines.Count=0, GetLinesText, Text (not accessible) but I am not able to check.

You can use:

isEmpty :=  advmemo.Lines.text = #13#10;