Unable to replay Oracle EBUS R12 script in Vugen

Hi folks,

I am getting below error while replaying a script for oracle ebus r12:

Action.c(282): Error -26377: No match found for the requested parameter "JSId". Check whether the requested boundaries exist in the response data. Also, if the data you want to save exceeds 100000 bytes, use web_set_max_html_param_len to increase the parameter size   [MsgId: MERR-26377]
Action.c(282): web_url("frmservlet") highest severity level was "ERROR", 1664509 body bytes, 1232 header bytes   [MsgId: MMSG-26388]

Below is the corelation thati have done. I am frustrated what to do as everything seems to be right.

web_reg_save_param("JSId",
  "LB=lservlet;jsessionid=",
  "RB=.",
  LAST);

 web_url("frmservlet",
  "URL=http://vsvaakntapp1244.unix.uk.vtg:8020/forms/frmservlet?&colorScheme=SWAN&serverApp=OracleApplications&digitSubstitution=CONTEXT&lang=US&env=NLS_LANG='AMERICAN_AMERICA'+FORMS_USER_DATE_FORMAT='DD-MON-RRRR'+FORMS_USER_DATETIME_FORMAT='DD-MON-RRRR+HH24%3AMI%3ASS'+NLS_DATE_LANGUAGE='AMERICAN'+NLS_SORT='BINARY'+NLS_NUMERIC_CHARACTERS='.,'&form_params=+config='EBSPATCH'+icx_ticket='.{WCSParam10}'+resp='SQLAP%2FVAHO_PAYABLES_INQUIRY'+secgrp='STANDARD'+start_func='AP_APXPAWKB_SUMMARY_VIEW'+other_params=''&encoding=UTF-8&acceptLanguage=en-gb&ifcmd=startsession",
  "Resource=0",
  "RecContentType=text/plain",
  "Referer=",
  "Snapshot=t10.inf",
  "Mode=HTML",
  EXTRARES,
  "URL=lservlet;jsessionid={JSId}?ifcmd=getinfo&ifhost=DCZC11057ND&ifip=10.20.6.35", ENDITEM,
  "URL=../OA_JAVA/oracle/apps/fnd/jar/fndlist.jar", ENDITEM,
  "URL=../OA_JAVA/oracle/apps/fnd/jar/fndaolj.jar", ENDITEM,
  "URL=../OA_JAVA/oracle/apps/fnd/jar/fndxmlparserv2.jar", ENDITEM,
  "URL=../OA_JAVA/oracle/apps/fnd/jar/fndutil.jar", ENDITEM,

Please please help if someone encountered this before. I am totally stuck at this.