public LTDescr setCanvasGroupAlpha()
{
this.type = TweenAction.CANVASGROUP_ALPHA;
this.initInternal = ()=>{this.fromInternal.x = trans.gameObject.GetComponent<CanvasGroup>().alpha;};
this.easeInternal = ()=>{ this.trans.GetComponent<CanvasGroup>().alpha = easeMethod().x; };
return this;
}