Google mock ByRef method

I have a class that takes a boolean as a reference parameter and returns an integer:

class Foo
{
  public:
    Bar my_bar;
    virtual int myMethod(bool &my_boolean) = 0;
}

/*...*/

int Foo::myMethod(bool &my_boolean){
  if (my_bar == NULL){
    my_boolean = false;
    return -1;
  }
  else{
    my_boolean = true;
    return 0;
  }

}

And I created a mock for this class:

class MockFoo : public Foo
{
   MOCK_METHOD1(myMethod,int(bool &my_boolean));
}

I'm having problems on how to set the expectations for this kind of function,because I need to set the return value and the reference parameter to specific values to properly create my unit tests.How can I deal with this kind of function with gmock?I tried following what I thought was the solution on the documentation:

using ::testing::SetArgPointee;

class MockMutator : public Mutator {
  public:
  MOCK_METHOD2(Mutate, void(bool mutate, int* value));
  ...
};
  ...

MockMutator mutator;
EXPECT_CALL(mutator, Mutate(true, _))
  .WillOnce(SetArgPointee<1>(5));

But either I didn't understood the example or it wasn't applicable for this case.Has anyone dealt whith this kind of situation before?

Thanks in advance.