[ns] warning: no class variable

Hi all,

I defined the following agent

Main_Agent::Main_Agent() : Agent(PT_UDP) {
...
bind("var_mainAgent", &var_mainAgent);
...
}

I also defined the following agent which inherits from the previous

My_Agent::My_Agent() : Main_Agent() {
...
bind("var_myAgent", &var_myAgent);
...
}

When I execute my file I get the following message

warning: no class variable Agent/My_Agent :: var_mainAgent

I believe this is because the Main_Agent's constructor is not executed when I call the My_Agent's constructor. How do I solve this?

Kind Regards