How to read the input field value into ABAP variable?

Hi All,

i need a read the value of an input field into an ABAP variable,and i am doing this in the following way

lstring = request->get_form_field('myFlag').

here 'myFlag' is the input field name,but this is not returning me any value into lstring.

I have gone through the SDN and tried to do this.

could you please help me out to resolve this issue.

Thanks in Advance,

Praveena