~ read buffer in a certain time

I need to read a buffer in a certain time range, all in msp.

So I'm trying to send a 0-1 click to rampsmooth to make the interpolation and then I go into wave, but it doesnt work.
It seems that the click is too short for rampsmooth and the ramp doesn't count up to 1.

Has anyone a hint for me how can I fix this?

Thanks