Get web item parameter using currentState.getParameter

Hi WAD experts,
how can we get the current parameter status of a web item in JavaScript (WAD in BI 7.0)?
In the code generated by the wizard the currentState.getParameter is mentioned:
<i>Information can be extracted using the parameter 'currentState' and 'defaultCommandSequence'. In either case create your own object of type 'sapbi_CommandSequence' that will be sent to the server. To extract specific values of parameters refer to the following snippet:
<b>var key = currentState.getParameter( PARAM_KEY ).getValue();
alert( "Selected key: " + key );</b></i>
Any idea how to get for example the VISIBILITY status of a chart item in JavaScript?
Thanks for your help!
Regards, Olaf

Does anyone have an answer to this question? We have an urgent need to "read" the current parameters of a web item and then take an action.
thanks
rodney

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