Can anyone help me to load a web tiles through my own server and that to programatically through widget that I'm creating?

[AashKothari]

I do have a widget with some 2d to 3d map conversion. I would like to load the coverage tiles that are already on my server but I can't add them through widget code to my arcgis map. If I simply write the load code in an HTML file I could do it but it don't work with widget part