actionscript 3 - as3 if statment to check number range -

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can tell me how amend can check if number in range? example 0-10 , 11-20. i've tried && , other things can't works. i'd keep simple possible. thanks

stop();  value_enter.addeventlistener(mouseevent.click, release1); function release1(evt:mouseevent):void  {     if ( number(inputfield.text) > 0)     {         gotoandstop(2);     }     else if ( number(inputfield.text) < 21)     {         gotoandstop(3);     } }

i use switch statement instead of multiple else if statements.
cleaner , more readable code.
allow add in more cases ease.

stop();  value_enter.addeventlistener(mouseevent.click, release1); function release1(evt:mouseevent):void  {  switch(true){   case ( number(inputfield.text) >=0 && number(inputfield.text) <= 11):     gotoandstop(2);     break;   case ( number(inputfield.text) >=10 && number(inputfield.text) <= 21) :     gotoandstop(3);     break;   default:     // inputfield.text value not in bounds  }

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