createDataObject in livecycle from a text field value

Hi Experts,

Can anybody help me increating a data object from createDataObject from a text field's value. Text field contents is multiline.

These two simple lines are working great in acrobat console but not when under a livecycle click button event.

var cMyC = "sample string";

this.createDataObject("test.txt",cMyC);

Please suggest.

Regards

Arvind