can't edit settings for strippet browser

Hi,

I have this kind of problem the difference is I'm able to build & generate the pbiviz file but no change has been taken into account.

I'm unable to customize the look of the strippet browser with the current release 0.2.15.
I tried to modify the capbilities.json file in order to change the display name of the Source Image attribut

Before
{
"name": "sourceImage",
"displayName": "Source Image (url)",
"description": "URL for an image to display in the top-right corner of the thumbnail",
"kind": 0
},

After
{
"name": "sourceImage",
"displayName": "Source Image (url) TEST",
"description": "URL for an image to display in the top-right corner of the thumbnail",
"kind": 0
},

>> I run npm run package, all thing works fine but when I import the "essex.widget.strippetbrowser.pbiviz" file into powerbi, nothing changed ...

I also tried to modify css file to modify the card-icon sizing, same problem, nothing changes..

Is there anything else to do ?