Connect layer to Atribute Sampler

Question

I want to use AtributeSampler -AnimTrack to make animation for one layer/

I want to change AtributeSampler -AnimTrack for each layer in runtime mode in another program after import effect - for example in UE4/

If i use AnimClip in Scene Settings - its animate all layers in one way!

Can anybody knows how link Atribute Sampler -AnimTrack to one layer?

Comments

i use SamlerAnimTrack in Atribute Samplers
its name is- Path_1
And than in Layer_1 in Spawner Script
i use
float st=spawner.LifeRatio;
Position = Path_1.samplePosition(st);

but i have problem with speed of particle track
my progress here :
https://youtu.be/386JbbNchtE