How to return result in variable from macro to kryon?

Hello, I have question about DAC

I use DAC Run macro.

I want return TstHiFunc from macro to kryon (code as below)

But I set the macro function return result in variable = TstHiFunc -→ It show blank.

value that expect = Helllo

Sub Test_Hi_Function()

Dim TstHiFunc As String
TstHiFunc = "Helllo"

End Sub

Please guide me for solve it.