Set the data types of component instances

Next you will assign data types to each of the component instances you dragged to the Stage earlier in the tutorial.

ActionScript 2.0 uses strict data typing, which means that you assign the data type when you create a variable. Strict data typing makes code hints available for the variable in the Actions panel.

In the Actions panel, add the following code to assign data types to the four component instances that you already created.
```
/* Data type instances on the Stage; other instances might be added at
    runtime from the Cart class.*/
var problems_cb:ComboBox;
var products_dg:DataGrid;
var cart_dg:DataGrid;
var products_xmlcon:mx.data.components.XMLConnector;
```
NOTE

The instance names you specify here must agree with the instance names that you assigned when you dragged the components to the Stage.

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