imageimagic and vbscript problem?

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VB

Hi...so i using this command "

dim i
set objArgs = WScript.Arguments

set img = CreateObject("ImageMagickObject.MagickImage.1")
do

para1=inputbox ("dati parametrul 1")
Wscript.Echo "Primul argument:" + para1

para2=inputbox ("dati parametrul 2")
Wscript.Echo "Al doilea parametru:" + para2

msgs = img.Compare("-metric","RMSE", "-subimage-search",para1, para2,"2", ">", "pararez.txt")
i= i+1
loop while(i < objArgs.length )

and I want to put in "pararez.txt" the difference between those to pictures ,like it does in imagemagick ,but instead of that ,it puts me all the pixels.How do i fix it?
or has vbscript a different command to write in .txt? the command "2>pararez.txt" is from imagemagick and I thought tha it may work in vbscript too,but it dosen't! this is what i get :

# ImageMagick pixel enumeration: 507,430,255,rgba
0,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)
1,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)
2,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)
3,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)
4,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)
5,0: (253,253,248,255) #FDFDF8 rgba(253,253,248,1)

........