It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import.
import crafttweaker.entity.AttributeModifier;

ZenGetter	GetterMethod	返回值类型
ZenGetter uuid	GetterMethod getUUID()	返回值类型 string
ZenGetter name（名称）	GetterMethod getName()	返回值类型 string
ZenGetter operation	GetterMethod getOperation()	返回值类型 int
ZenGetter amount	GetterMethod getAmount()	返回值类型 double
ZenGetter saved	GetterMethod isSaved()	返回值类型 布尔值

SetterName	SetterMethod	参数类型
SetterName saved	SetterMethod setSaved(boolean)	参数类型 布尔值

 Copy
for operation:
0 = add: Increment X by Amount
1 = multiply_base: Increment Y by X * Amount
2 = multiply: Y = Y * (1 + Amount) (equivalent to Increment Y by Y * Amount).

ZenScript
 Copy
AttributeModifier.createModifier(String name, double amount, int operation, @Optional String uuid);