[polyml] Windows programming in Poly/ML

Hello, everyone I'm a student from Ireland and I'm working on my final year project with Poly/ML recently. Here is a question:

dlgProc(dial, WM_COMMAND{notifyCode =3D 0, wId=3D1 (* OK button *), ...}, (= )) =3D (* When the OK button is pressed we end the dialogue. *)

let val _=3DEndDialog(dial, 1); val tempValue =3D "Hello"; in (LRESINT 0, ()) end

I have made a dialog box and I want to define a variable "tempValue" assigned by value "Hello" when I close the dialog box. But the variable could not be defined after I closed the dialog box. Please help me out. Thank you very much.

Regards,

Yuting Zhong