"Thanks for your quick response, Wendy! That is very helpful, I knew there would be a way, I just wasn't sure what it was called. I didn't..."

"Hi Ashley, Thanks for your help! My advent calendar is coming along nicely :) I have added date variables, and I was wondering whether ..."

"Hi Ashley, thanks for your reply. Yes I have searched for examples and the one you linked to is great! I see that this example uses layer..."