How to add Custom icons for conditional formatting

Hi,

I struck with adding new icon set so that i can use them for conditional formatting,

i came across  couple of  resources where it is said that it can be achived by adding icons in theme file

https://exceleratorbi.com.au/conditional-formatting-using-icons-in-power-bi/ (By Matt Allington / July 19, 2019)

https://hatfullofdata.blog/svg-in-power-bi-part-7-using-theme-svg-icons/ (12TH OCTOBER 2019)

following the above weblink created icons theme file , upon uploading they dont throw any error , but i dont see the new icons added in my conditional formatting Iconset.

MyIcons theme.Json file 

{ "name":"TestIconTheme",
"icons": {
        "RedUpArrow": {
		"description": "Red Up Arrow",
            "url": "data&colon;image/svg+xml;utf8, <svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><path fill='%23FF0066' d='M 16 4.09375 L 9.28125 10.8125 L 10.71875 12.21875 L 15 7.9375 L 15 28 L 17 28 L 17 7.9375 L 21.28125 12.21875 L 22.71875 10.8125 Z' /></svg>"
        }, 
        "BlueDownArrow": {
		"description": "Blue Down Arrow",
            "url": "data&colon;image/svg+xml;utf8, <svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'> <path fill='%233F9FEC' d='M 15 4 L 15 24.0625 L 10.71875 19.78125 L 9.28125 21.1875 L 16 27.90625 L 22.71875 21.1875 L 21.28125 19.78125 L 17 24.0625 L 17 4 Z'/> </svg>"
        }
    }
}

Not sure why the icons are not showing up,

•  Is any thing wrong with my theme file (checked the icons URL part pasting browser the images are coming correctly )
•  Is there any kind of setting that am i missing to get the new icons added to Iconset 
•  As PowerBI has updates every month and the links which am refering to are of July 2019 and Oct 2019, was there any change Json theme file for icons  

Can any one please help me on this.

Thank you 

Sunil