# Whitebox.setInternalState()

PowerMockito allows you to inject value to globally declared member fields, this is also a wrapper around Java Reflection API's.

```java
Whitebox.setInternalState(classUnderTest, "mCustomClassObject", (CustomClass) null);
```

**Note:** You should not set values left and wright with `setInternalState()` method, this should only be used when there is some if condition that is always `true` and you need to test else condition. for example, a null check when that object cannot be null at that time.


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