Making Umbraco Block Grid readonly or hiding it in SendingContentNotification

Questions
1

Hi,

I am pretty new to the Block grid and lists, and I encountered an issue when working with it.

I have Block grid property which I wanna hide for some user groups, I tried same hack that I have been doing forever ( removing the property in Content Sending Event ) but this results in error when saving the content.

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Can anyone please help me regarding this? Making the property readonly results in same error as well

This is how I am hiding the property :

   var firstVariant = notification.Content.Variants.FirstOrDefault();

   if (firstVariant is not null )    
   firstVariant.Tabs.First(x => !String.IsNullOrEmpty(x.Alias) && x.Alias.Equals("gridContent/properties")).Properties = firstVariant.Tabs.First(x => !String.IsNullOrEmpty(x.Alias) && x.Alias.Equals("gridContent/properties")).Properties.Where(x => !x.Alias.Equals("content"));
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/114385-making-umbraco-block-grid-readonly-or-hiding-it-in-sendingcontentnotification