I check the trany fluid yesterday when van was in nuetral and warm the today checked it before starting it up and it at the same level is that normal
With a automatic transmission equipped with a dip stick most manufacturers recommended procedure is first. Drive vehicle few miles bring tranmission fluid normal operating temperature. Stop set hand brake put tranmission into park. Remove dipstick wipe off reinsert back into travsmission. With engine idling step on brake pedal and cycle through gears from 1st back to park pausing in each gear for 5 seconds. With engine still on remove dip stick wipe off reinsert now remove and make sure fluid is within the hash marks on dip stick.
Checking in park with engine idling is the proper procedure. Go out to the car when it's been sitting overnight and just turn it on and check. A few miles of city driving should warm it up - stopping and taking off creates more heat than cruising. Wait until your temp gauge is at normal operating temp then check again. Transmission fluid definitely expands when it's hot so what you are describing is strange.