Multiple EA protection

[michele guidoni]

Hello everyone, I'm new to the forum, I have many Expert Advisor and I need to protect with time limit and account number. This part of the code I would like to put it in a library and have it uploaded by all the experts to their opening, so that, by modifying only this then all the experts work with the new data. I'm lost and I can not get out of it. I put below the code that I have inside the first Expert, I tried with the functions #include and #import but I can not load the data. This is the code: the date and the account number are for example. Thanks a lot to everyone.

//+------------------------------------------------------------------+
// -- EA protection
//+------------------------------------------------------------------+
// 
//string expire_date; ="2018.10.20"; //<-- hard coded datetime year-month-day

// 
//static int AllowedAccountNo; =156249; 

//+------------------------------------------------------------------+
// -- Functions
//+------------------------------------------------------------------+


int start() {


// funzione controllo data 
datetime e_d=StrToTime(expire_date);

if(TimeCurrent()>=e_d)
{
Alert("The MPA Portfolio EA has been expired");
Comment("The MPA Portfolio EA has been expired");
return(0);
}

//---- Account validation check ----

int numconto = AccountNumber();
if (numconto == 0)
{
Print("Waiting account number...");
return(0);
}

datetime nopermitalert=0;
if (numconto != AllowedAccountNo && nopermitalert != Time[0]) 
{
Alert("You are not allowed to use This MPA Portfolio Expert Advisor!");
nopermitalert = Time[0];
return(-1);
}


then continues the EA code