How to pass values to another form without using clicked method in args?

Hi,

 i would like to ask if how to get the date value in another form without using clicked method? 

Form A: I need to get the fromDate value only.

Assettrans Form:

I will use the init form and us the "fromDate" in Form A as part of the condition to hide a record if transdate<fromDate. Can anyone help me what method to use? thank you.