Using variables in #{select} tag attributes

I have a page in my app with a dynamically-generated form, in which I need a number of <select> elements. Since I don't know in advance how many there will be, I need to put an ID number in the name attribute of each <select>. I'm trying to use the built-in #{select} tag (documentation here) like so:

#{ select 'select_' + ${IDnum}}
...options, etc...
#{/select}

When I do that I get a MissingMethodException:

 No signature of method: Template_1009.$() is applicable for argument types: 
(Template_1009$_run_closure1_closure2_closure3) values: 
[Template_1009$_run_closure1_closure2_closure3@ad2388] Possible solutions: 
_(java.lang.String), is(java.lang.Object), run(), run(), any(), get(java.lang.String).

When I instead do:

#{ select 'select_${IDnum}'}

the page renders correctly, but the select element renders like this in view-source:

<select name="select_${IDnum}" size="1" >

So开发者_高级运维, how do I get the value of ${IDnum} into the name attribute? I can do this with normal HTML <select> tags, but I'll need to write some Javascript to emulate Play's value:${x} functionality that I really don't want to bother with.

Thanks!

Try this :

#{select 'select_'+IDNum}