Expert Advisor expire and disable trading

 

  Hello dear programmers. I shall want to know how shall I disable Expert Advisor from trading if time exceeds a time interval ?

   for example if I have  datetime time=20:00;

     datetime time1=TimeCurrent();

 if(time1>time)

   {..stop trading .. if I use ExpertRemove can he enable again the EA ? I shall want after expiration never to use it. Thank you.

Reason: