SAPUI5 is a widely used framework for building web applications. One of the key features of SAPUI5 is the ability to pass parameters to functions from XML views. This allows for greater flexibility and customization in your applications.

To pass parameters to a function from an XML view in SAPUI5, follow these steps:

1. Define your function in your controller. For example, let's say you want to create a function that takes in two parameters, "name" and "age":

```

function myFunction(name, age) {

   // do something with name and age

}

```

2. In your XML view, add a control that will trigger the function. For example, let's say you want to trigger the function when the user clicks a button:

```

<Button text="Click me" press="myFunction"/>

```

3. To pass parameters to the function, use the "data" attribute of the control. For example, let's say you want to pass in the parameters "John" and "30":

```

<Button text="Click me" press="myFunction" data="{name: 'John', age: 30}"/>

```

4. In your controller, use the "getSource" method to get the control that triggered the function. Then use the "data" attribute to get the parameters:

```

function myFunction(event) {

   var button = event.getSource();

   var name = button.data("name");

   var age = button.data("age");

   // do something with name and age

}

```

And that's it! You can now pass parameters to your functions from XML views in SAPUI5. This allows for greater flexibility and customization in your applications, and makes it easier to build complex functionality.