How to set datefield as input in design studio

Hi ,

When user selects a date from datefiled component data coressponding to that date should get displayed in crosstab.

Iam using Design studio 1.2

i used following script to get data displayed.

DS_1.clearAllFilters();

var startDate = DATEFIELD_1.getDate();

var year= Convert.subString(DATEFIELD_1.getDate(), 0,4);

var month=Convert.subString(DATEFIELD_1.getDate(), 4,6);

var day=Convert.subString(DATEFIELD_1.getDate(), 6,8);

var  DMY = day+"."+month+"."+year;

DS_1.setFilterExt("0CALDAY",DMY );

unable to find the mistake.

Please help me out!!!

Regards

Sushma