data binding - SAPUI5 / OpenUI5 Databinding for Custom Controls -

i'm working sapui5 , openui5. i'ved developed custom controls never used 2-way databinding controls...i've tried

omycontrol.bindproperty("somevalue", "omodel>/testbindingvalue")

what i've seen is: when watching model in debugger field abindings have 1 entry:

spath: "/testbindingvalue"  sinternaltype: "int" 

and correct sinternaltype of controls property type (in case "int").

but when i'm watching array omodel.odata empty , omodel.getproperty("/testbindingvalue") returning undefined...but control has value "somevalue"...so, have idea?

thanks, alex

update:

here see workflow:

first creating model:

    var omodel = new sap.ui.model.json.jsonmodel();     sap.ui.getcore().setmodel(omodel, 'omodel'); 

then initializing control:

var omycontrol = new mycontrol({     somevalue: "test value of control" }); omycontrol.bindproperty("somevalue", "omodel>/testvalue"); 

now, when i'm doing:

alert(omodel.getproperty("/testvalue")); 

i "undefined".

so, normal controls working, "value", "text", "visible" or "enabled" , on..

i'm guessing there in custom control making not work correctly. have created example of understand doing (http://jsbin.com/kiwoza/2/edit?html,console,output) , seems work i'd expect. if example somehow different you're trying accomplish please update question details why it's not quite right.