I am trying to achieve to hide my UI elements such as text, images etc. behind another transparent image. The problem is that I am using the latest Unity version and these custom shaders have no effect on hiding the UI shaders. The two custom shaders I have applied for testing are:

Shader "Custom/DepthReserve"
{
    Properties
    {
    }
    SubShader
    {
        Tags { "RenderType" = "Opaque" "Queue"="Geometry-1" }
        LOD 100

        Blend Zero One

        Pass
        {

        }
    }
}

and

Shader "Custom/InvisibleMask" {
  SubShader {
    // draw after all opaque objects (queue = 2001):
    Tags { "Queue"="Geometry+1" }
    Pass {
      Blend Zero One // keep the image behind it
    }
  } 
}

So is there a way to use a transparent image to hide text, images and even gameobjects?