Cant get values of BooleanElement and CheckboxElement

[haaimobile]

When i add code ilke shown below;

{ "id":"remember_me", "type":"BooleanElement", "caption":"Remember me", "value":true, "bind":"#remember_me" },
{ "id":"session_id", "type":"HiddenElement", "value":"sessionid_12345" },
{ "id":"cdcd","type":"CheckboxElement", "caption":"CheckboxElement", "value":true },
{ "id":"ulke","type":"StringElement", "caption":"Azerbaijan" }

i get only value of session_id.

other values is empty (CheckboxElement, StringElement, BooleanElement)