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Setting the value of an output element to a constant
Use the Graphical Data Mapping editor to set the value of an output element to a constant.
You can use the Assign transform to set a character string value in an output element. If you want an explicit data type for the value in the output element, use a Cast transform with the required xs:type.
You can have zero or more input elements to a Cast transform. However, you can only cast one value for an output element by using a Cast transform. If the mapping for the Cast transform has more than one input, any input that is not referenced by the argument of the Cast transform will be ignored.
You can also set a value by using an expression or function, as described in Setting the value of an output element using an expression or function.
Follow these steps to set the value of an element by using the Assign or Cast transforms: