Rails - Jun 2006 - Using passed-in locals in observe_field in a partial

I need to be able to assign a value to the field_id field of observe_field
inside a partial.  Ideally, it would look something like:

<%= observe_field(local_variable_name1, :url => {:action =>
''some_constant'', :id => local_variable_name2}) %>

I''m not having a problem with the assignment to :id of
local_variable_name2.  But I can not figure out how to use a local in the
field_id field.  Any ideas?

TIA,
Bill
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