Is there a way for EA to stop copying a signal?

[Longsen Chen]

I'm writing an EA to check DD. Once  there is a big DD, I want this EA to turn off the signal subscription. What kind of functions should I use?

[Fernando Carreiro]

Longsen Chen:
I'm writing an EA to check DD. Once  there is a big DD, I want this EA to turn off the signal subscription. What kind of functions should I use?

There is a thing called "Search"! There is also a thing called "Documentation".

1. https://www.mql5.com/en/docs/signals

[Longsen Chen]

Fernando Carreiro:

There is a thing called "Search"! There is also a thing called "Documentation".

1. https://www.mql5.com/en/docs/signals

Search is a good thing. Forum is a good thing too.

Thanks for your help

[Longsen Chen]

   bool ret;
   int error ;
   ret = SignalInfoSetInteger(SIGNAL_INFO_SUBSCRIPTION_ENABLED,0);
   if(!ret)
   {
      error =GetLastError();
      printf("SignalInfoSetInteger Error = %d, ",error);
   }

I got message:
2021.06.04 15:39:33.841 testSignal (GBPUSD,H1)  SignalInfoSetInteger Error = 4014, 
How to solve it?

4014  Function is not allowed for call