Restoring point in time - Aurora Mysql DB gives an error: Yo don't neet to set storage size

Loged in aws console, for my Aurora Mysql DB cluster I select restoring point in time option:

1. Set instance name
2. Click "Restore to point in time" button Then I get this error: "The requested DB instance will be a member of DB cluster. Yo don't neetd to set a storage size"

There is nothing in this process where I can set the storage size

If I restore by snapshot it works fine.