Edit the duration of text expression after effects

[anouab19920213]

hi I want to decrees the duration of my text animation with this expression I’ve tried edit the '' framDuration*2 '' I’ve set it to ‘’ framDuration*1 ‘’ it worked but it only decreased from 2s to 1s I want it to decrees bellow 1 second something like 15 frame or 10 frames

freq = 1;
decay = 6;
duration = 0.25;
retard = (textTotal-textIndex)*thisComp.frameDuration*2;
t = time - (inPoint + retard);
startVal = [100,100,100];endVal = [0,0,0];
if (t < duration){
linear(t,0,duration,startVal,endVal);
}else{
amp = (endVal - startVal)/duration;
w = freq*Math.PI*2;
endVal + amp*(Math.sin((t-duration)*w)/Math.exp(decay*(t-duration))/w);}

[Mylenium]

I'm not clear what you are saying here. You would simply modify the already defined "duration" value, which is in seconds. Everything else would only accelerate the actual bouncing or put more dampening on the expression.

Mylenium

[anouab19920213]

i've already done that but it dosen't work it seems like it change the scale or the overshot of the characters 

[anouab19920213]

but it dosen't change the full duration of the animation 

[Rick Gerard]

Change

duration = 0.25;

to

duration = 15 * thisComp.frameDuration;

That will make duration count frames instead of seconds. 

What property are you adding this expression to? I'm not exactly sure what you are trying to accomplish because the expression basically moves a 3D position property from 100, 100, 100 to 0, 0, 0, and adds a bounce but it throws an error if added to Transform/Position which is the only 3 Axis array possible on a text layer without an effect applied.