Simulink: Can't undo "optimization improvement" setting in relational operator

I have quite a number of Simulink models developed in an ancient version (release 12). They've been working fine -- until, that is, I ran Model Advisor. It advised that I change the output data type of relational operators from double to boolean. That broke the simulation, that uses the output to multiply a double value.

Now I can't figure out how to put things right again. Can someone please help? I just need to find the place where to set the output type. Thanks