XMLExist (Magic xpi 4.5)
This function lets you check if the element defined in the given path exists.
| Syntax: | XMLExist(Alpha sourcepath) | 
| Parameters: | sourcepath: A valid XML path for the source. | 
| Returns: | True if the element defined in the path exists; otherwise, it returns False. | 
| Note: | This function is only supported for the Data Mapper. This function is not supported when using the XML streaming parser. |