Pin Code with Special Characters

[Philostrates]

When I bought my iPad Pro the IOS offered me to create a six letter/number PIN Code.
Wow, as a member of Anymous Paranoics I liked that and entered something including special characters like &%(]
Well, yes, paranoid.
Well, battery was low, so I had to restart that thing.
And now.... aaaaargh.... it offers me the old numeric ten field number field to enter my PIN.
Is there a magic spell to switch from that numeric PIN thing to a full keyboard?

Aloha, Servus, A+

Philostrates