# Magic number of the master instance

The value must match the unique Magic Number identifier of the master EA instance.\
The EA continuously checks the trading state of that master.

If this value is set to zero:

* Chain Mode is disabled
* The EA trades normally and independently
* No monitoring of another instance occurs

Only one master can be monitored per instance.

{% hint style="info" %}

## **Simple Example**

If the master EA uses Magic Number 10001:

* All follower instances must reference 10001
* They will remain paused until the master reaches the defined drawdown condition

If the value does not match any active EA instance:

* Chain Mode will not work as expected
  {% endhint %}


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