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Set Global Variable

by QuantShare, 1919 days ago
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This function allows you to store a variable value globally so that it can be referenced later by any QuantShare tool.

Since variables between a trading system and money management script cannot be shared (The former uses QS language and the latter uses CSharp/C#), you can for example store a trading system's optimizable value into a global variable to be referenced later by the money management script. This way, you can optimize a variable in the trading system formula and use the value of that variable (for each optimization) to perform some other calculation in the money management script.

Example:

Trading system's formula:

Optimize("a", 1, 10, 1);
b = perf(close, a);
buy = b > 2;

// Store variable
sid = GetSimSetting(_SimulationID);
temp = set_global_var("var1_".sid, a);

// Notice that we have added the 'simulationID' value to the variable name so that the money management script can retrieve the correct variable.
// If you don't do that then when using multithreading, you could end up getting wrong values

Money management script:

Global event:
double value = 0;

OnStartSimulation event:
value = (double)Global.GetVariable("var1_" + Functions.SimulationID);

You can now use the "value" variable in any other event.

This is just an example to show you how to use global variables to pass variable between a trading system's formula and a money management script. Of course there are many other uses for this function.


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Type: Trading Indicator

Object ID: 1507


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Trading financial instruments, including foreign exchange on margin, carries a high level of risk and is not suitable for all investors. The high degree of leverage can work against you as well as for you. Before deciding to invest in financial instruments or foreign exchange you should carefully consider your investment objectives, level of experience, and risk appetite. The possibility exists that you could sustain a loss of some or all of your initial investment and therefore you should not invest money that you cannot afford to lose. You should be aware of all the risks associated with trading and seek advice from an independent financial advisor if you have any doubts.