AutoCAD Visual LISP / AutoLISP :: Update Radio Button Default Values In Dialog Box?

Rudimentary lisp & dialog box skillls here...

I have a little dialog box with seven radio buttons and a text box that generically accomplishes what it's supposed to do. To retain the current dialog values, I use the write-lline function to store the information and then use read-line to bring that information back in for other Lisps that I use. As long as the user doesn't open the dialog, whatever options were last selected will remain in effect.

However, if the user re-opens the dialog, then whatever defaults I have initially set up in the dialog will then become active (in other words, whichever of the radio buttons I have set to "1")

My question is whether or not I can have the dialog box set up so that if a user selects an alternate radio button, that radio button will keeo it's value whether or not the dialog is opened and until and if the user changes it..

As it is now, whenever the user opens the dialog box to change, say one radio button, the user then has to change the other radio buttons if the defaults don't match the current run requirements.

Here's the dialog and the lisp:

OPTIONS : dialog {
label = "   Counter to Cad Options";          
: spacer {
height = 0.75;

[Code] ......