Possible to use jsp:setProp with jsp:getProp in it?

Background info:
I have a bean that contains a variable dbid(with set and get methods). I can get the value of it by using the ordinary <jsp:getProperty.../>
But I would like to set the value like this:
<jsp:setProperty name=".." property ="dbid" value="<jsp:getProperty name=".." property="dbid"/>+1"/>
That is to set the value of dbid to dbid++
Is it possible to make this sort off call in a JSP file?
I have tried, but cannot make it work. But my logic tells me it must be possible!!
Hope you can help me!! I will not be cheap with the duke dollars! ;-)
In advance, thanx!!

Try this:
<jsp:setProperty name="bean_name" property="property_name" param="request_param_name" />
I think this will work...

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<HEAD>
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<% if (task.isRunning()) { %>
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