Add text to PictureMarkerSymbol in ArcGis using javascript

I am new to ArcGis, i need complete code of how to add dynamic text on the marker symbol. I have Location Data in Json format....

{locations: [{latitude: 52.1, longitude: 4.1, textToDisplayOnThePictureMarkerSymbol: 34}, {latitude: 52.2, longitude: 4.9, textToDisplayOnThePictureMarkerSymbol: 50}, ...]}

Pls help me...