Select this option if multiple results are expected from the selected XPath expression.
This option is used to capture multiple values from the XPath expression and add them to the Workflow property. When this option is selected, all elements matching the XPath expression are saved to the property. When this option is not selected, only the first element matching the XPath expression is saved to the property.
If the Set property to all value instances option is not selected, it is recommended to follow the Apply XPaths to Message Item action with an instance of the Check Last Execution Result rule. If the Set property to all value instances option is not selected and execution of the XPath expression returns more than one result, Workflow will set the action result to false but no exception will be generated, and the configured task list will continue. If this is an error state for your environment, use the Check Last Execution Result rule to handle the error.