How to increase the wait time in load runner?

I am trying to increase the wait time in load runner controller from default 180 sec to 999 sec. But still it is getting timed out in 180 sec. how to solve this?

go to vugen----run time setting----preferences-----options and do the necessary changes. like http request time out = 999


or


1. Modify Mercury InteractiveLoadRunnertemplateqtwebdefault.cfg. Insert the following:
[web]
ReceiveTimeout=10000
2. Modify Mercury InteractiveLoadRunnerdatWebAdvancedOpt.txt. Change:
[LIST]
1=”T_COMBOBOX;Web;EnableIPCache;DNS caching;Save a host’s IP address to a cache to conserve time in
subsequent calls to the host.;1;Yes;”
2=”T_COMBOBOX;Web;HTTPVer;HTTP version;Indicates the version of HTTP used by your application. Select version
1.0 or 1.1.;1;1.1;<1.0;1.1>”
3=”T_COMBOBOX;Web;KeepAlive;Keep-Alive HTTP connections;Allow persistent HTTP connections to enable multiple
requests to be sent over the same TCP connection.;1;Yes;”
4=”T_EDIT_NUM;Web;MaxConnections;Concurent connections limit;Sets the maximum number of simultaneous keepalive
connections that a Vuser can maintain during script execution;1;4;<0;10>”
5=”T_EDIT_NUM;Web;ConnectTimeout;Connect timeout (seconds);The maximum amount of time in seconds, that aVuser waits to connect to a server, before issuing an error.;1;120;<0;10000>”
6=”T_EDIT_NUM;Web;ReceiveTimeout;Receive timeout (seconds);The maximum amount of time in seconds, that aVuser waits to receive information from a server, before issuing an error.;1;120;<0;10000>”
7=”T_EDIT_NUM;Web;NetBufSize;Network buffer size; Sets the maximum number of the network buffer that may be
used by the Vuser. The default is 12288 bytes.;1;12288;<0;100000>”
8=”T_COMBOBOX;Web;CacheAlwaysCheckForNewerPages;Cache-Emulate always check for newer
pages;;1;Yes;”
9=”T_EDIT_NUM;Web;PageDownloadTimeout;Page download timeout(seconds);;1;120;<0;32000>”