**Problem :**

I am new to matlab and nntool. Currently I want to implement the neural network with the use of matlab using nntool.

I am facing below error message. I am unable to understand the error message.

```
**??? Insufficient number of outputs from right hand side of equal sign to satisfy assignment. Error in ==> nntool at 694 [errmsg,errid] = me.message;
com.mathworks.jmi.MatlabException: Insufficient number of outputs from right hand side of equal sign to satisfy assignment.**
```

How can I fix the above error message?