Extended model config settings

[Anonymous]

Recently I have seen a question that should help me with extending the categories in Infraworks. 

Looking through post and comments I have not found solution for me. 

I need to add "Visibile" button in front of every feature set in Surface Layer category.

I tried to edit ModelExplorer.json file which is in Modelname.files folder. 

"Category_Surface Layers": {
	"selectable": true,
	"lod": false,
	"name": "Surface Layers",
	"iconPath": ":/Icons/Common/folder.ico",
	"Color": {
		"name": "#0000ff",
		"alpha": 255
	},
	"Feature_USER_A_LANDSCAPING_OUT": {
		"className": "USER_A_LANDSCAPING_OUT",
		"selectable": true,
		"visible": false,
		"iconPath": ":/Icons/Common/coverage_32.png",
		"Color": {
			"name": "#993388",
			"alpha": 255
		}
	}

 Here I took a string "visible": false, from default parameters of "Category_Surface Layers" and move it to "Feature_USER_A_LANDSCAPING_OUT". 

When I load my model again the file was re-written, however, I saved ModelConfig file. I also tried to mark this file as "Read only" but it did not help.