[iReport 4.0.2 - Parameter List]

I'm reciving a parameter in my report via Java:

HashMap pMap = new HashMap();[/code]

 pMap.put("listDouble", listDouble);[/code]

In my report I have a parameter named 'listDouble' and I can get the value of it.

I just want to print one below another. Like this.

Double1
Double2
Double3

If I just put the $P{listDouble} in my report. The result is that:

Double1, Double2, Double3

__

Thanks for help. Sorry my English.