[Pharo-project] newbie smalltalk question

I have the following code: isValid (self value == nil and: [self required == false]) ifTrue: [^true]. self isCorrectType ifFalse: [self validationError: 'value doesn''t coerce to correct type'. ^false.] ^ self allConditionsValid. when I try to save this I get a ' Nothing more expected ->' right before '^ self allConditionsValid'. I'm guessing this is because I have the '^false' in the second line? How would I accomplish the same thing - correctly? Thanks, Elliot