How to upgrade th from one to 16 with command

I know when you type /th and level it’s supposed to make it 16 but I don’t know how to type the exact code properly can someone write the exact code for town hall 16 upgrade from town hall 1 or 2 thank you so I’m basically asking u guys to write /th level 16 in the proper way thanks

/th 16
Have a great day!