web_reg_async_attributes

[Sri]

My script is falling without the following between for every few lines of the script. Am I doing something wrong?

    web_set_sockets_option("SSL_VERSION", "TLS1.2"); (this was in Vuser_int())

    web_reg_async_attributes("ID=Poll_9", 
        "Pattern=Poll", 
        "URL=https://{EnvironmentURL}/poller/receive", 
        "PollIntervalMs=10100", 
        "RequestCB=Poll_9_RequestCB", 
        "ResponseCB=Poll_9_ResponseCB", 
        LAST);

 here recorded actions.

    web_stop_async("ID=Poll_9", 
        LAST);