I have a Block List on a Document Type with 3 available blocks (1Col, 2Col, & 3Col). Each of those three blocks has some inner Block List properties (aka nested Block Lists). For the label on the three main types, I would love to just show the label which is visible on the FIRST nested block. Is there any way to achieve this?

For example, if I choose a block of type "1Col", I can make a Label like this:

{{$index}}{{$settings.umbracoNaviHide == 1 ? ' DISABLED' : ''}} - 1 Column Row

I'd like to append the label of the first item in the "Col1Content" property (say, for instance, an RTE, which has it's own custom Label)

I've tried :

{{Col1Content[0].Label}}

Which, I know, was a bit of a long-shot... ;-)

The stored JSON for the property looks like this:

{
   "layout":{
      "Umbraco.BlockList":[
         {
            "contentUdi":"umb://element/91e9986b17284025abc10186edbeea5a",
            "settingsUdi":"umb://element/1623d9dee3f940e2973f1a7065abb41c"
         }
      ]
   },
   "contentData":[
      {
         "contentTypeKey":"8ab7b342-19fa-4c29-98e9-eda5f835d00f",
         "udi":"umb://element/91e9986b17284025abc10186edbeea5a",
         "PaddingCol1":null,
         "Col1Content":"{\"layout\":{\"Umbraco.BlockList\":[{\"contentUdi\":\"umb://element/3afcc0230fbb4dda956ec4413cac5551\",\"settingsUdi\":\"umb://element/75accad9c96c4e32a59f3b2daaa659ae\"}]},\"contentData\":[{\"contentTypeKey\":\"9ed671c2-5298-4621-8844-158f3fcd6ca8\",\"udi\":\"umb://element/3afcc0230fbb4dda956ec4413cac5551\",\"BlockName\":\"My Custom Block name\",\"HeadingLevel\":\"h1\",\"Header\":\"My Header\",\"Subheader\":null,\"Alignment\":null}],\"settingsData\":[{\"contentTypeKey\":\"57e2218c-ed58-40a6-8ea1-14a4fc1e38d7\",\"udi\":\"umb://element/75accad9c96c4e32a59f3b2daaa659ae\",\"umbracoNaviHide\":0}]}"
      }
   ],
   "settingsData":[
      {
         "contentTypeKey":"a2d6796c-c00c-4d8b-9839-dfdd2961dc9d",
         "udi":"umb://element/1623d9dee3f940e2973f1a7065abb41c",
         "BgColor":null,
         "umbracoNaviHide":0,
         "Padding":null,
         "Alignment":null,
         "SectionImage":"[]",
         "ImageOverlayColor":null
      }
   ]
}

If I un-encode the Col1Content, I get this:

{
   "layout":{
      "Umbraco.BlockList":[
         {
            "contentUdi":"umb://element/3afcc0230fbb4dda956ec4413cac5551",
            "settingsUdi":"umb://element/75accad9c96c4e32a59f3b2daaa659ae"
         }
      ]
   },
   "contentData":[
      {
         "contentTypeKey":"9ed671c2-5298-4621-8844-158f3fcd6ca8",
         "udi":"umb://element/3afcc0230fbb4dda956ec4413cac5551",
         "BlockName":"My Custom Block name",
         "HeadingLevel":"h1",
         "Header":"My Header",
         "Subheader":null,
         "Alignment":null
      }
   ],
   "settingsData":[
      {
         "contentTypeKey":"57e2218c-ed58-40a6-8ea1-14a4fc1e38d7",
         "udi":"umb://element/75accad9c96c4e32a59f3b2daaa659ae",
         "umbracoNaviHide":0
      }
   ]
}

I've tried these as well:

{{Col1Content[0].BlockName}}

{{Col1Content[1].BlockName}}

...but nothing ever displays.

Has anyone done something like this?