ActionScript - Trace Update Value from Tweener -

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tweener doesn't update myvalue while passing param while tweening. why?

public var myvalue:number = 0.0;  tweener.addtween(this, {myvalue: 1.0, time: 2.0, onupdate: tracevalue, onupdateparams: [myvalue]});  private function tracevalue(value:number):void     {     trace(value);     }

primitive values passed value in actionscript, never reference. tweener updating value, gets passed tracevalue original value. in code above it'll trace out 0. solution pass in reference target object instead, , read value each time. if pass in field name can done dynamically flexibility. eg:

public var myvalue:number = 0.0;  tweener.addtween(this, {myvalue: 1.0, time: 2.0, onupdate: tracevalue, onupdateparams: [this, 'myvalue']});  private function tracevalue(target:object, field:string):void {     trace(target[field]); }

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