Can I change component's state?

Question

Hi All
First of All, I'm sorry for my english. But I'll do my best to explain my question.
Can I change component's state?
For example, When I click the button, I wanna change Label's state.
<s:states>
  <s:State name="A"/>
  <s:State name="B"/>
</s:states>
<fx:Script>
  <![CDATA[
      private function changelblState():void{
           // lbl.includeIn = "B"          --> impossible
   // or
   // lbl.state = "B"                  --> impossible
  ]]>
</fx:Script>
<mx: Label id="lbl" includeIn="A"/>
<mx: Button click="changelblState()"/>
How can I change component's state?
Thanks in advance.
Kevin.

Answer 1

Thank you for reply.
But I've already tried.
<s:states>
  <s:State name="A"/>
  <s:State name="B"/>
</s:states>
<fx:Script>
  <![CDATA[
      private function changelblState():void{
         lbl.currentState = "B"
  ]]>
</fx:Script>
<mx: Label id="lbl" includeIn="A"/>
<mx: Button click="changelblState()"/>
I got the error message.
ArgumentError: Undefined state 'invisibleSmallVideo'.
at mx.core::UIComponent/getState()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UICo mponent.as:10607]
at mx.core::UIComponent/findCommonBaseState()[E:\dev\4.y\frameworks\projects\framework\src\m x\core\UIComponent.as:10627]
at mx.core::UIComponent/commitCurrentState()[E:\dev\4.y\frameworks\projects\framework\src\mx \core\UIComponent.as:10381]
at mx.core::UIComponent/setCurrentState()[E:\dev\4.y\frameworks\projects\framework\src\mx\co re\UIComponent.as:10323]
at mx.core::UIComponent/set currentState()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:6425]
I know this is fault. If I can use lbl.includeIn = "B";  , I can solve it, but I can't.