How to decrease values gradually like "ease out"? (Opposite to interpolation)

[Alexx31]

Hello,

I have often the situation, that I need an "ease out". A force has for example a strong influence and should decline gradually to zero.
In animation it would be solved with an curve, but what is the tool inside tyflow? 

I'm using Interpolation to get the opposite effect of an "ease in"...

I find keying attributes is quite abstract, because the values are not visible within tyflow.

Are there any other attributes to use for this?

Thanks