Does your procedure compile on oracle in the first place??
Is EVENT a valid type?
Can you be sure from those errors that its the true thats the problem? and not:

p_user IN valid_users.userid%TYPE

Just thoughts, I don't have access to Oracle at the moment to be able to test TRUE out for you.
Have you tried passing in 1 for true?? and 'TRUE' quoted?

In reply to Re: Passing boolean value to PLSQL procedure by agoth
in thread Passing boolean value to PLSQL procedure by Billy

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