Implementing a ComboTree extension

[easypower]

I am sorry, I do not know it is need that ConfigOptions function must be override.
But I follow your code and there is also a js error "missing object"
error js code is

store:new Ext.data.SimpleStore({fields:["text","value"],data :[]}),
submitValue:true,
tree:{id:"TreePanel1",...}

"missing object".
I guess the missing object is reference to "tree:{id:"TreePanel1",...}"