Accessing Dialog Field value problem

Hello,

I am having problem in accessing the effective date value in dialog form.

I am explaining as follows.

I have a class A and Class B.  Class A initiates a dialog form which contains effective date field wherein user enters value. I can access and manipulate effective date value using dialogfield.value() in class A. However I need the same effective date value from class A to manipulate in Class B.  I instantiate class A instance in Class B and call a method built within Class A to display effective date, I get error message stating that Dialogform needs to be instantiated at the line of calling class A's method in class B.

I can simply instantiate a dialog form in class B and have the user enter effective date value, that becomes repetitive and becomes 2 effective date field values.

Any suggestion how to retrieve Class A dialog effective field value in Class B?

I would appreciate if you can please help me out!!

Regards,

SID