Click the GLL Source Code button on the LabVIEW NXG Module tab of the Step Settings pane to launch the GLL Source Code Files Dialog. This dialog is only available when configuring a LabVIEW NXG step using the LabVIEW NXG Runtime Engine. The dialog displays the Project Path currently configured for a step. You can also choose the LabVIEW NXG project that contains the source files for the GLL currently selected in the step.