How to set the scroll position of a scroll rect transform content during runtime?

just playing aroung with the new GUI and just can't figure out how to simply set the scroll position of the content rect transform of a scroll rect.

Here's my setup:
I have a Rect transform with a scroll rect, the content of the scroll rect is a child of it with a rect transform on it.
Now during runtime i just want to set the Position X to a specific value of the content rect transform.

Code (CSharp):

1. public RectTransform rt;
2.  
3. void Start () {
4.     rt1.transform.position = new Vector3(300, 0, 0);
5. }

this just doesn't work, the panel just gets crazy and jumps to position: -1651, 351, -539
that really doesn't make any sense to me... am i missing something?
thanks!

 

If im understanding you right, you want to transform the object itself not its component

so..

Code (CSharp):

1. void Start()
2. {
3. transform.position = new Vector3(XValue,YValue,0);
4. }

 

thank you Tim C.
its working with anchoredPosition