Hi Debra,
the first parameter to that method is now a pointer, so you need to put the value in a string before calling it. For example;
otherid = p_web.gsv('sv_3:sessionID')
p_web.RequestData.WebServer._DeleteSession(otherid)
Incidentally you never need to clip the value returned by p_web - all the methods that return strings automatically return clipped strings.
Cheers
Bruce