I am trying to simply set an end date to be 2 hours later than the start date. I am firing on the event of After updating existing content. I have the Entity has field condition to check for the date field.

I'm using the Set a data value action. I am modifying node:field-date:value2 with a value of node:field-date:value and an offset of +2 hours.

When saving a node, the end date and time are now empty / blank.