I am using an ASP.NET custom validator to validate the len of a textarea&#039;s text. This is the function I am calling. I get an "is null or not an object" error. <BR><BR>&#060;script language="javascript"&#062; <BR>function checkLen(src, args){ <BR> args.IsValid = (src.text.length&#060;151); <BR>} <BR>&#060;/script&#062; <BR><BR>I have the same problem validating textboxes using src.value.length. <BR><BR>src and args are passed to the function by the validator control, at least this is the way I understand it. Any advice would be welcome.<BR><BR>Thanks in advance!