The value in the value input can be written to the target signal or reset using a trigger. Select the node in the properties dialog.

Trigger

Select a trigger signal from the drop-down list. The value is saved when a rising edge of the selected trigger signal is detected.

Reset

Select a reset signal from the drop-down list. If a rising edge of the reset signal is detected, pending changes are reset to the value of the target signal. If the synchronize value option is activated, the value is reset to the selected synchronization source.