* \param name the property to set
* \param value an opaque pointer to binary data
* \param length the size of the binary data in bytes (optional)
- * \param destroy a function to dellacate the binary data when the property is closed (optional)
+ * \param destroy a function to deallocate the binary data when the property is closed (optional)
* \param serialise a function that can serialize the binary data as text (optional)
* \return true if error
*/