Thanks for your Quick reply , It is little Bit help me but not totally, because I need that validation inside the List, that name block has in the list and if list has 3 record that the 3 record should be Check.

can you share sample oml.

Ok, I just put the requirement . I don't know how validation is Work in that .

See the attached oml.

Thank you Rahul,

 This is my requirement ,but how can I check weather the all field is valid , means I need to change the destination from that screen to another. So at the time of validation how can check weather all field is valid, means when I click on the button of the screen it check all field is valid or not and if valid I need go that flow from one screen to another. can you have idea about that ?

Hi Akshay,

Inside block as you can see we are using Form widget and we are checking Form.Valid property.

And if you need to put extra validation then i did use one button action you can add validation this action.

Hope this will help you.

Regards

Rahul