> #### How to create a column binding

> This procedure shows an example of creating a column binding for a data element.

> 1 | Drag a data element from the palette and drop it in the report. New Data Binding appears.

> 2 | Create a new column binding:

> 1 | In Column Binding Name, specify a unique name for the column binding.

> 2 | In Data Type, select a data type appropriate for the data returned by the expression you specify next. If you are not sure what the data type is, use the default type, Any.

> 3 | In Expression, specify the expression that indicates the data to return, using one of the following methods:

> o | Type the expression directly in the Expression field.

> o | If you need help constructing the expression, choose the expression builder button to launch the expression builder. Figure 4‑2 shows an expression in the expression builder that combines the values of two data set fields selected from the Customers data set. Choose OK when you finish constructing the expression.

> Figure 4-2 | The expression builder showing a column-binding expression

> Figure 4‑3 shows an example of a column-binding definition.

> Figure 4-3 | New column-binding definition

> 4 | Choose OK to save the column binding.

> In the layout editor, the report design displays [Contact_Name] in the location where you inserted the data element, indicating that the data element uses the column binding you defined.

> 3 | Preview the report. The data element displays the data defined in the column binding expression.

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