Instantiate实例UGUI为什么位置不起作用

for (int i = 0; i < 5; i++)
{
Vector3 ta = transform.position + new Vector3(-10f + i * 30, 0, 0);//我想要的位置
Debug.Log("ta+"+ta);
GameObject go = Instantiate(gold, ta, transform.rotation);//实例化的时候设置位置
//go.transform.position = ta;
Debug.Log(go.transform.position + "---" + i);//循环5次，位置都是一样的
go.transform.SetParent(cavas);
Debug.Log(go.transform.position+ "---"+i);
ta = transform.position + new Vector3(0, 30, 0) + new Vector3(-10f + i * 30, 0, 0);
GameObject go1 = Instantiate(diamands, transform.position + new Vector3(0, 30, 0) + new Vector3(-10f + i * 30, 0, 0), transform.rotation);
//go1.transform.position = ta;
go1.transform.SetParent(cavas);
}