[Closed] wanted , got Problem

Here is my problem:

    Interface: finalRender
     Properties:
     Methods:
  	<integer>numREPasses()
  	<boolean>addREPass passName fileName
  	<boolean>delREPassName passName
  	<boolean>delREPass pass
  	<integer>numREsForPass pass
  	<boolean>addREForPass pass re layerName
  	<boolean>delREForPassRef pass re
  	<boolean>delREForPass pass re_id
  	<TSTR by value>getREPassName pass
  	<boolean>setREPassName pass passName
  	<TSTR by value>getREPassFilename pass
  	<boolean>setREPassFilename pass fileName absPath
  	<boolean>getREPassEnable pass
  	<boolean>setREPassEnable pass enable
  	<maxObject>getREPassElement pass re_num
  	<boolean>setREPassElementEXRFormat pass re_num type format
  	<boolean>loadREPassEXRParams pass
  	<boolean>saveREPassEXRParams pass
     Actions:

So Why this gives error:

finalRender_stage_1.finalrender.numREPasses()

error:

-- Argument count error: numREPasses wanted 1, got 0

Is it supposed to want 0 not 1?
By the way all methods are like that always wanting more than it should be:)
If I put any numbur it results:

-- Runtime error: Object does not implement this interface: finalRender