var field=this.addField('datafield','text',1,rect); not working in IE11 but working in IE8

My project is running using ColdFusion and JAVA. Using cfobject java classes are using to fill pdf fields. Using this.addfield adding few fields and attaching to datafield.

Code:

"function submitform(){" &

"if(recordindex==0){" &

"XMLData+=INFOFields+'</INFOFields>';}" &

"app.alert(XMLData);" &

"var f=event.target;" &

"var rect=f.rect;" &

"var field=this.addField('datafield','text',1,rect);"

"app.alert(field);" &

"field.richtext=true;" &

"field.value=XMLData;" &

etc.

This code running perfectly in IE version 8 but not working IE11 atleast there is no error message or script console.

Can you please suggest me how to workit out.

Thanks,

LN