var tag="<select id='text1'> <option value='20' selected>20</option> <option value='50'>50</option> <option value='100'>100</option> <option value='200'>200</option> </select>";
var button1 = document.getElementsByClassName('fr-btn-text')[0];
button1.innerHTML=tag;
var date1 = document.getElementById("text1");
var sel=document.getElementById("text1");
sel.onchange=function(){
var a = sel.options[sel.selectedIndex].value;
var abc= contentPane.parameterEl.getWidgetByName("texut");
abc.setText(a);
_g().parameterCommit();
}