How to animate spike collision

I hope someone could help me out here. I have a spike animation and I want to know if its possible to animate the collision area so when spike goes in, the collision also follows it:

Its pointless jumping a spike when it retracts if the collision area is still high up

 

gonna have to go 2 pieces, and use logic transform to move the spike with the desired collision box

 

Yea I get you now. I just have to set the spike as decoration and attach a transparent spike as enemy and add the logic to sync with the animation.

That's a lot of work for hundreds of spikes

 

make one and link it all and copy it to a sandbox, then you can copy it anytime you want as many times as you want, and unlink what isn't supposed to be to function how you want it

 

'Copy it to a sandbox' a BB2 thing @heathclose ?

 

no just make a scene you call sandbox and mute it, but put all the things you would want to link up and copy at some point so you can just pull from your sandbox when you are creating new scenes...

 

Thanks @heathclose !