Making a macro that holds down Hypershift

You can't toggle Hypershift, but I figured I could make a macro that held it down. I have Hypershift bound to Mouse Button 4, and the macro bound to Mouse button 5, but for some reason when I bind the macro to my mouse, Synapse freezes and then comes back. When it unfreezes, all of the features like sensitivity and key binds are gone, and I have to force close Synapse to get them back. This happens every single time, and it's the first time I've tried to make a macro. Am I doing something wrong?