Using the HTMLTemplate to display IMG tags

I am working with a KanbanboardItem and trying to render HTML of an image

KanBan.ItemsAppearance.HTMLTemplate := '<b><#TaskName></b><img src="<#ImageSrc>">';

//some where later in my code
Item.HTMLTemplateItems.AddPair('ImageSrc', 'res://sprint1');

The image does not render or show as expected. I have also tried tags and they don't render or show either.

The TaskName is working fine from variable, even hardcoding image src into the template is not giving any results. I have also updated and compiled latest components. What am I missing?

So the "file://" src works as expected