Hi kalpana,
You get following values in INBOUND_PLUG variable in line no.68 as u said above.
DEFAULT
IP_DEFAULT
searchB2B
IP_SEARCHB2B
customers
ip_customers
inboundplug
IP_inboundplug // When variable contains this value, press F5 on line 86 & see where does the control go
DEFAULT
IP_DEFAULT
Send me the screenshot when control is on line 86 and u press F5.
Thanks & Regards
Richa