[Closed] Rollout Floater in Attribut Holder

hi all,
i want to open a floater by pressed button in AttributHolder modifier, the Floater is ok for open, but nothing behind. It’s possible ? with an other method ? i don’t understand because print return me “Rollout:ResR” thx for your help
example :

ca=custAttributes.getDef $.modifiers[1].MyCtrl
attributes MyCtrl
redefine:ca
(
parameters Res rollout:ResR
(
	 ....................
)
rollout ResR "MyRollout" width:162 height:300
(
	button btn1 "Button" 
on btn_btn1 pressed do
(
	 openRoll()
)
)
fn openRoll =
(
MyFloatingRollout = newRolloutFloater "Test Floater" 800 800
addRollout this.ResR MyFloatingRollout 
	 print this.ResR 
)
)