Hi! Form properties, their name beginning with a # , can be of any type. However, if there is no #, it's a child and it must be an array. If it's not, you'll get "Cannot create references to/from string offsets nor overloaded objects". If you get this error, you missed a #. If you an issue filed with this it's very probable that it's a contrib module not yet form API'd or a bogus module. Regards NK