Why my text it empty when click

<span id="sex"></span>

<script>

    var radio = new AW.UI.Radio;		

    radio.setId("sex");

    radio.setName("sex");

    radio.setItemText(itemTextArray);    

    radio.setItemValue(itemValueArray);

    radio.setItemCount(2); 	

        radio.setClass("flow", "horizontal"); // if this row disable it work	

        radio.setSize(200,40);

    radio.refresh(); 

<script>

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