Configurable reports block (plugin)

Hello everybody,

 i.m using the version 3.01 of the plugin with moodle 3.0.

 When i try to create a simple sql query

(  example:   SELECT username, lang FROM prefix_user

UPDATE prefix_user SET lang = 'en_us' WHERE lang = 'en' )

to update a table i receive the message "Not allowed word".  In the configuration page of the plugin, the sql security is disable.  I'm logged as an admin. 

SELECT queries work well. 

 Any  idea?

Thank you