Using a behavior like you've tried will work for this. Height Time Start defines how long it takes to add the specified height when the behavior is applied. Height Time Stop defines how long it takes to remove the specified height when the behavior is removed.
It sounds like you have only changed one of those time fields.
Using a behavior like you've tried will work for this. Height Time Start defines how long it takes to add the specified height when the behavior is applied. Height Time Stop defines how long it takes to remove the specified height when the behavior is removed.
It sounds like you have only changed one of those time fields.