【AE吧】求大神呀··这段表达式为啥子错了嘛

Radius = effect("Radius")("slider");
Speed = effect("Speed")("slider");
RotationOffset = effect("Rotation Offset")("angle"); // center = [this_comp.width/2,this_comp.height/2,0];
radius = 200;
angle = time * Speed + RotationOffset;
x = Radius * Math.cos(degreesToRadians(angle));
z = Radius * Math.sin(degreesToRadians(angle));
add(center, [x,0,z])＋ wiggle (8,140)－value ;
我是按ak大神62期教程做的··
可是到这一步老是显示错误呀··
原来的是这样的
Radius = effect("Radius")("slider");
Speed = effect("Speed")("slider");
RotationOffset = effect("Rotation Offset")("angle"); // center = [this_comp.width/2,this_comp.height/2,0];
radius = 200;
angle = time * Speed + RotationOffset;
x = Radius * Math.cos(degreesToRadians(angle));
z = Radius * Math.sin(degreesToRadians(angle));
add(center, [x,0,z])