How to communicate with Pixel SDK from iframe

If you are using iframes on your website or have onsite campaigns running within iframe you can communicate with our main pixel as follows:

// sending an event
var ev = {"event": { "update": {"locality": "new_value"} }, "_vt":true};
window.parent.postMessage(JSON.stringify(ev), "*");

//setting a variable using setVar
var ev = {"setVar": ["var_name", "variable_value"], "_vt":true};

Our pixel automatically receives the data you send and processes it the usual way.

Note that you need to consider Same Origin Policy or Access-Control-Allow-Origin from iframe to parent window.