Passing values in Kinetic Screen

Hi All,
I am trying to pass values of Quantity Required to Quantity to Issue on Issue Material Screen:
This is the basic screen:

After the input is provided on the screen, marked in orange, the screen populates.
I want to pass the values of “Required Quantity”(marked in Red, 436) field to Quantity(marked in Red, 0), the value of this field should change to 436 as well.
Can someone please help with that?

Thank you.