[Closed] dotNet checkButton help

Hello guys.
I need some help to understand how dotNet radiobutton (or checkbox) can be used with maxscript. MXS is quite new for me…
So i am trying to change the interface of a standard UI done with maxscript using dotNet and i don’t know how to change the states for a radiobutton.
For example:
This is a simple script using just the mxs lang:

try (destroydialog TestMXS) Catch()
rollout TestMXS "TestMXS" width:210
(
Fn functionA = (print "Check Button enable")
Fn functionB = (print "Check Button disable")
Fn functionC = (print "Button was pressed")
   
checkbutton chkBtn01 "Check Button 01" pos:[1,10] width:200 height:20
button Btn01 "Button 01" pos:[1,30] width:200 height:20
on chkBtn01 changed state  do
   (
      if state then
         functionA()
      else
         functionB() 
   )   
on Btn01 pressed  do
   (
      functionC()    
   )   
)
createdialog TestMXS

and i want to change, using dotNet, into something like this:

try (destroydialog TestDotNet) Catch()
rollout TestDotNet "TestDotNet" width:210
(
Fn functionA = (print "Check Button enable")
Fn functionB = (print "Check Button disable")
Fn functionC = (print "Button was pressed")
   
dotNetControl chkBtn01 "RadioButton" pos:[1,10] width:200 height:20
dotNetControl Btn01 "Button" pos:[1,30] width:200 height:20
   
on TestDotNet open do
   (
      chkBtns = #(chkBtn01,Btn01)
      chkBtns.flatstyle =  (dotNetclass "System.Windows.Forms.FlatStyle").Flat
      chkBtns[1].Appearance = chkBtns[1].Appearance.Button
      chkBtns[1].text = "Check Button 01"
      chkBtns[2].text = "Button 01"
   )
   
on chkBtn01 checked do  -- this is not working. What is the correct way?
   (
      if state then
         functionA()
      else
         functionB() 
   )
   
on Btn01 click do
   (   
      functionC() 
   )   
)
createdialog TestDotNet

Thank you !