Type or choose the expression to which you want to apply a filter. Click the Expression (fx) button to edit the expression.
Choose the data type for Value. When possible, choose a data type that matches the data type for Expression.
The values in Expression and Value must evaluate to the same data type. For example, if Expression is set to a field that has the data type System.Int32 and Value is set to 7, from the drop-down list, choose Integer.