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MT4/MT5: Set global variables

On MetaTrader4 (MT4) / MetaTrader5 (MT5), you can set global variables, which are stored in MT4/MT5 itself independently of programs such as Expert Advisors (EA) and indicators. All programs running on MT4/MT5 can use the global variables.

Please note that these global variables set on MT4/MT5 are different from the usual global variables that are declared outside of functions in the source code of EA and indicators.

Stored for 4 weeks

The global variables for MT4/MT5 are stored for 4 weeks from the last access to MT4/MT5. Note that they will be deleted after 4 weeks of no access.

Here we will look at how to set global variables on MT4/MT5.

Switch between MT4/MT5 tabs to check the steps for each.

Step 1

Click "Tools" in the menu and select "Global Variables".

Step 2

On the "Global Variables" window, you can add, edit, or remove a global variable.

Add a global variable

To add a global variable, click "Add" and set the variable name and value.

Edit a global variable

To edit a global variable, double-click the item you wish to change and enter the variable name or value.

Delete a global variable

To delete a global variable, select the variable you wish to delete and click "Delete".

Step 1

Click "Tools" in the menu and select "Global Variables".

Step 2

Add a global variable

On the "Global Variables" window, you can add, edit, or remove a global variable.

Edit a global variable

To edit a global variable, double-click the item you wish to change and enter the variable name or value.

Delete a global variable

To delete a global variable, select the variable you wish to delete and click "Delete".

Created

: 2022.10.11

Last updated

: 2026.03.18

Writer

Takayoshi Nakamaru

Manual production consultant, MBA

Nakamaru is a manual production consultant at FINTECS, a company that specializes in creating manuals for their clients.
With a wide range of experience from fintech to entertainment, he presents what user-friendly manuals should be like.
He works with numerous large corporations as an external manual production project manager.

【Business information】
http://www.fintecs.co.jp/profile/

Supervisor

Akira Takagi

Systems engineer, MetaTrader administrator

After graduating from Computer Science at the Uninove, Brazil, in 2014, he has worked on various systems development projects.
He participated as a developer in the launch of forex services in 2019. Since then, he has also been involved in the development of MetaTrader plugins and APIs. He is certified by MetaQuotes as a MetaTrader5 Administrator and active in consulting and advisory as well.

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