             done: (positions) =>   
               return if !@isMounted()
               if Object.keys(positions).length != 0 && @current_request == histocache_key
-                @local.histocaches = 
+                @local.histocache = 
                   hash: histocache_key
                   positions: positions
 

  save hist


window.Histogram = ReactiveComponent
  displayName : 'Histogram'


    md5 key

  try_histocache : -> 
    return false if !ENABLE_SERVER_HISTOCACHE
    proposal = fetch(@props.proposal)
    histocache_key = @histocache_key()

