la fonction substring requiert 3 argument(s)

i had execute this query in sql server management studio 2012 the result was ok , but when exécute it via other interface i had this error message : ODBC-ERROR / 3700 / MICROSOFT SQL SERVER native client 11.0  la fonction substring requiert 3 argument(s)

the querry : 

select 
(select substring ( (SELECT  case when kindart = 'H'  AND vater='2' AND FIE.glasteilend='N' and FIE.ffartnr <> ''  then  FIE.GHOEHE when LFDNR='2' AND FIE.glasteilend='N' and FIE.ffartnr <> ''  then FIE.GHOEHE end test1
FROM  AUFART FIE WHERE FIE.AUFNR=L.AUFNR AND FIE.REFPOSNR=L.REFPOSNR   AND FIE.glasteilend='N' and FIE.ffartnr <> ''  FOR XML PATH ('FIE.auftnr')),20,6 ) + '               '+ substring ( (SELECT  
case when kindart = 'H'  AND vater='2' AND FIE.glasteilend='N' and FIE.ffartnr <> ''  then  FIE.GHOEHE when LFDNR='2' AND FIE.glasteilend='N' and FIE.ffartnr <> ''  then FIE.GHOEHE end test1
FROM  AUFART FIE WHERE FIE.AUFNR=L.AUFNR AND FIE.REFPOSNR=L.REFPOSNR   AND FIE.glasteilend='N' and FIE.ffartnr <> ''  FOR XML PATH ('FIE.auftnr')),71,6))  H_Vitrage1
from AUFPOS  L 
where L.aufnr = '5009340'

would please at least tell me why in sql management studion work just fine and evry where else not 

thank you