Can MetaTrader "remember" a bool setting on shut down?

Hello all,

I'm kinda new to MetaTrader programing...mostly self taught. I'm trying to get an EA to remember a specific bool setting on shut down (deinit) and then restore that same bool setting on start up (init) again.

For this EA it is of particular importance as it is the difference between holding a trade for into a longer period of time (riding a trend) or closing it out too soon.

I've checked the file functions but am confused because Files only seem to handle integers (int) or doubles. A bool, I believe, is different and simply restoring a number won't do.

Is it possible to get an EA to restart with the same bool setting it shut down with?

Thanks for your help!!

GlobalVariableSet will set a global variable that metatrader will hold for you, GlobalVariableGet will retrieve the variable. You cannot set it to true or false but a 0 or 1 will work just as well. Metatrader will hold the value for you for up to 4 weeks if it is not accessed, the 4 week timer is reset everytime you access that variable.

Thank you Magnum for your quick response. I'll give that a try...I've been reading up on Global Variables. But this brings up another question. If this sets a Global Variable...won't that effect ALL currency pairs using this EA? In other words if GBP/USD sets the Global Variable to "true" (1), won't that also affect AUD/USD as well? I'm not sure that will help, as the conditions for AUD/USD may not be the same. Is that not correct?

Assign a global variable that is unique to each currency that the ea is attached to. When you use the globalvariableset function you have to give it a name, I will use a string variable to build a unique name for the variable.

string globalname; //Make this global in your ea.
globalname = Symbol() + "hold"; // or whatever other name you want.
globalvariableset(globalname,1); //sets the value of the variable


then to read the value

whatevervariable = globalvariableget(globalname);

by doing it this way each instance of the ea will keep its own global variable.

Once again, Thank you very much for your knowledge and assistance on this. I have that coded in and it compiled correctly...always a good thing for me...

I won't know the outcome of this until the market opens and it starts trading this week...so I'll let you know next week how this function worked....again I thank you for sharing your knowledge with the rest of us folks banging our heads against the wall.

Magnumfreak,

I want to thank you so much for your advise and help. Your suggestion worked exactly as I coded it. I just got a "HoldLong" signal at 0800 this AM, (Monday) and shut down the program, then reloaded it. The code worked exactly as I wanted it to.

Thank you so MUCH.