InfoPath form in visual studio using "InfoPath 2007 Form Template" not working

Question

Hi all I have created an InfoPath form in visual studio using "InfoPath 2007 Form Template". I added a formula to the field and defiled the type of the field lests say decimal.


but when I run the form its not calculating value and also validation is not occuring..... however; when I created form in InfoPath designer and add the same formula and defined field type its working as expected....  can some body tell me why things are not working on Visual Studio..