Pro Glow showing through GUI layer

I posted this in the support area but got no answers so I apologise for double posting, but I think the question is better asked here and I can't delete the old thread. My problem is:-

I have a 3d object behind some GUI 2d graphics. I've added the Pro glow effect to the camera and any part of the 3d object with it's alpha on glows just like it should. Problem is the glow comes through the GUI stuff on top and I want it to be blocked by the 2d graphics on top.

Any ideas guys? Here is the GUI shader that lets the glow show through.....

[CODE]Shader "Unlit/Transparent Colored" { Properties { _MainTex ("Base (RGB), Alpha (A)", 2D) = "white" {} }

 SubShader
 {
     LOD 100

     Tags
     {
         "Queue" = "Transparent"
         "IgnoreProjector" = "True"
         "RenderType" = "Transparent"
     }
     
     Pass
     {
         Cull Off
         Lighting Off
         ZWrite Off
         Fog { Mode Off }
         Offset -1, -1
         ColorMask RGB
         AlphaTest Greater .01
         Blend SrcAlpha OneMinusSrcAlpha
         ColorMaterial AmbientAndDiffuse
         
         SetTexture [_MainTex]
         {
             Combine Texture * Primary
         }
     }
 }

}[/CODE]