How to capture value from edit box?

I want to enter “xxxxx” into username filed and capture entered value from username filed and enter it into some other field. I used text method to capture value from edit box as below but getting error message ‘Object doesn't support this property or method’,.

Please let me know how to capture edit box value and enter it into other field.

 

function test()

{

var A, B;

 A = "xxxxx"

Aliases….username.SetText(A);

B = Aliases….username.Text();

Aliases….otherfield.SetText(B);

}



Many Thanks,

Sam