Hi, i wanted to know if you could use member variables in OTcl classes before declaring them. e.g %class Balloon %Balloon RedBalloon %RedBalloon set tail 0 here 'tail; has not been declared. thanks, bindu __________________________________________________ Do You Yahoo!? NEW from Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. http://geocities.yahoo.com/ps/info1