I don't know anything about the scripting deal, but I can tell you that the insert statement won't work.

You set your blahID as the primary key, not null. And you are trying to set your PK as a null value, or at least a non-integer from what you typed. So you can't do that.

The blahID has to have an integer value in it for the insert statement to work.

-Side note:

And I believe you would just need:
insert into blah(mytext)
values('some text value')

If you get your PK field to autoincrement, because the blahID would automatically insert a new value upon insert of the mytext field.