Getting the raw javascript code instead of Value after doing replace_html in RJS

# part of view showing search results
<table> 
<%@people.each do |person|%>
<tr>
 
<%if params[:first_name]="1"%><div id="first_name"><td><%unless person.first_name.blank?%>
 <%=@copyofperson = person; in_place_editor_field :copyofperson, :first_name, {}, :url => { :controller => 'person', :action => 'updateattribute', :id => person.id } %>
<%end%></td></div><%end%>
 
.
.
.
</tr>
<%end%>
</table>
 
#person controller
def updateattribute
  @person = Person.find(params[:id])
  i = params[:editorId]
  j = i.split("_")
  j.pop
  j.pop
  j.pop
  j.pop
  j.delete_at(0)
  field_name = j.join("_")#Getting the field to be updated in field_name
 
  @person.update_attribute "#{field_name}", "#{params[:value]}"  
 
end
 
 
# updateattribute.rjs
page.replace_html 'first_name', :partial=>'first_name', :object=>@person
 
 
 
# _first_name.html.erb
 
<div class ="first_name">
<td><%=@copyofperson = @person; in_place_editor_field :copyofperson, :first_name, {}, :url => { :controller => 'person', :action => 'updateattribute', :id => @person.id } %></td>
</div>