Hi vayapavo, (vaya nickname

)
I have played around this just for fun...
It seems there is some mistake on your code.
Try to use this one:
so.addVariable("plugin.name","photo");
so.addVariable("plugin[photo].url","/espacio_cms/modulos/krpano/lab.jpg");
so.addVariable("plugin[photo].align","center");
For me, it worked... but I have no idea if doing it this way it is a good practice or not.
Perhaps Klaus can explain more here.
remark: It seems the plugin name is "
self-declared" using
so.addVariable("plugin[photo]......ect
if you let your first line as is (
so.addVariable("plugin.name","photo");), then the debugger say :
ERROR: unknown atriubate/path - plugin.name
Hope this help.
Salut.