Was the homework a fluke??

So today Tipper and I collected the bed and the clicker to see if yesterdays "park it" was just a fluke or has she actually figured it out.
I set the bed down on the floor and began the training routine, not only did she "park it" but she wouldn't let Alex near the bed. She has figured out that the bed means treats. On the few occasions that she came back to the bed and did not sit when I said "park it" she looked at me for a few seconds and then quickly put her butt down on the bed. Tomorrow night will be the real test for "park it".