CZML Image Material

Hi,

Why my image does not auto loaded when I call my CZML?

Here is my CZML :

[

{

“id”:“0”,

“polygon”:{

“material”:{

“image”:{

“image”:“data:image/png;base64,iVBORw0KGgoAAAANSUhE etc etc etc”

}

}

},

“vertexPositions”:{

“cartographicRadians”:[

2.027311889062929,-0.04819060013608079,0,2.0298012696283414,-0.04819060013608079,0,2.0298012696283414,-0.0513209179627027,0,2.027311889062929,-0.0513209179627027,0

]

}

}

]

Helo Cesium team,

Is there any explanation about this issue?