This is not the correct way to trigger event expression in a range. In this example every value change greater than 6 would set off the event and if the value was greater than 9 it would be immediately terminated. This could cause numerous events to be created when no events are in progress. If trying to set off an event between the range of 6-9, it will need defined in the start trigger. The correct way to define the trigger would look like the example below:
This will put an event in progress only when the specified tag is higher then 6 but less then 10.