Now I need to call a Modal Form from the first Form.
The form is built, but processing don´t stop, in the second Form, for Data entering.
What is wrong?

What is wrong is that the form is not modal, even though you think it is < s >.

Just a SWAG here - is this an svc based form or a vcx based form? If it is a vcx based for and you call its Show() method, are you inclusing the 1 parameter like this:

loForm.Show( 1 )