change parameter between visible and hidden

reportContext.getDesignHandle().getElementByID(292).setProperty("hidden","false"); 
I design a report and i want to change one parameter (named "pickStep", id 292) between visible and hidden based on another parameter(named "operateType", id 297). 
i tried to add <pre class='_prettyXprint _lang-auto _linenums:0'>reportContext.getDesignHandle().getElementByID(292).setProperty("hidden","false");</pre> to the function beforefactory. but it doesn't work. Can anyone help me? 
 
I continued the job and found when i use drill through to call another report. the report which has visible parameter didn't call the window of "enter parameter". i want to know how to resolve it. 
 
what i actually want is to call the window of "enter parameter" which has different parameters(like "stepNum", "stepMin"&"stepMax") based on another parameter(hidden) when i use the drill-through to call the report itself ,one window per hyperlink.

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Comments

mwilliams

I don't know that you'll be able to do this through script or not. I'll have to take a look. What is your BIRT version? To be clear, you want to choose a parameter in one report and then drill to another report showing this parameter or not showing this parameter? Or am I misunderstanding?

Tilo

hi?mwilliams
thanks for your reply and sorry for my bad description on my problem.
my birt version is 2.6.2.
based on this parameter, i want to decide whether to allow the user to type the parameter(if not, use the default value).i want to do it in one report, so i want to call the window through script. that's why want to change the property "hidden" to "false".

mwilliams

I really don't think this is possible within a single parameter page if using the standard BIRT parameter page. You might be able to do this with a custom parameter page, though.

http://www.birt-exchange.org/org/devshare/deploying-birt-reports/298-2.2-birt-tag-library/

Tilo

thanks for your help!I'll try it. 
 
<blockquote class='ipsBlockquote' data-author="'mwilliams'" data-cid="85341" data-time="1321377146" data-date="15 November 2011 - 10:12 AM">
I really don't think this is possible within a single parameter page if using the standard BIRT parameter page. You might be able to do this with a custom parameter page, though. 
 
<a class='bbc_url' href='http://www.birt-exchange.org/org/devshare/deploying-birt-reports/298-2.2-birt-tag-library/'>http://www.birt-exchange.org/org/devshare/deploying-birt-reports/298-2.2-birt-tag-library/</a> </blockquote>