How to make it so that i can press ctrl to crouch and then rmb to crouch aim can't seem to get it to work?

I have tried for hours on end with no luck to setup a crouch aim. I’ve added the crouch aim blendspace to my animation blueprint and hooked up the conditionals but i just can’t get it so that when i am crouching and then aim it will trigger the blendspace and i don’t know what im doing wrong. I set up a blueprint and got it to print a unique string to show me that it does work but still cant get the crouch aim to work any help will be very appreciated as im new to ue4 thanks

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