How to make Y-Anchor Max scale?

Hi everyone,

Today I programmed a little feature where if you clicked the inventory button, it would slide up if it was down, and down if it was up. I have a bit of a problem here, though.

The Y-Anchor Max has to scale with the screen.localresolution.height, but I don’t know how to do this in my code. I tried loads of variables and numbers but I just couldn’t get it right. Hopefully someone can help me out with this one!

Here is my code, by the way:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class inventorySlider : MonoBehaviour {
	Animator anim; 
	public bool slideUp;

	void Start(){
		anim = GetComponent<Animator> ();
		slideUp = false;

	void OnMouseOver(){
		if (Input.GetKeyDown (KeyCode.Mouse0) && slideUp == false) {
			anim.SetBool ("slideBoolUp", true);
			slideUp = true;
		} else if (Input.GetKeyDown (KeyCode.Mouse0) && slideUp == true) {
			anim.SetBool ("slideBoolDown", true);
			slideUp = false;

	void SetSlideUp(){
		anim.SetBool ("slideBoolUp", false);
		gameObject.GetComponent<RectTransform> ().anchorMax = new Vector2 (0, .73f); //This one is the problem. Idk what value the .73f should be to have it scale.
		gameObject.GetComponent<RectTransform> ().anchoredPosition = new Vector2 (10, -90);
		gameObject.GetComponent<RectTransform> ().SetSizeWithCurrentAnchors (RectTransform.Axis.Vertical, 240);

	void SetSlideDown(){
		anim.SetBool ("slideBoolDown", false);
		gameObject.GetComponent<RectTransform> ().anchorMax = new Vector2 (0, 0);
		gameObject.GetComponent<RectTransform> ().anchoredPosition = new Vector2 (10, -100 * Screen.height);
		gameObject.GetComponent<RectTransform> ().SetSizeWithCurrentAnchors (RectTransform.Axis.Vertical, 240);

If more information is required, I will gladly provide it.
Thanks already, even if all you did was read!

Thanks to @UnityCoach for helping me out! It turned out that what I was doing wrong was that I was only changing the max-anchor. Now that I also added the min-anchor for the same axis, it seems to work properly. A great many thanks to you sir!