why there are no hold down button event ?? is it hard to make one ? pls epic team make an event for hold down button .
i spent all day to find a good method and found this which it worked for me and my IQ i think raised by +1 after losing during research 
here it is ,a R delay hope it will work for you guys :
ignore the branch of hold jump its part of my project , and the event you want to be trigger put it instead of "start floating event " .