Distribution/Version: XP

I am using Dia 0.94 in drawing diagram then exporting them to Tex PsTrick file. 
I found that the exported Tex file has a problem:

When add text object in the diagram, the y-coordinate of the text object in the 
exported PsTrick script is wrong. We must add a negative sign before its y-
corrdinate to get correct result.

This is a example:

........
\newrgbcolor{dialinecolor}{0.000000 0.000000 0.000000}
\psset{linecolor=dialinecolor}
\rput[l](15.000000,12.400000){\scalebox{1 -1}{$y^2_i(k)$}}
\setfont{Helvetica}{0.800000}
\newrgbcolor{dialinecolor}{0.000000 0.000000 0.000000}
\psset{linecolor=dialinecolor}
\rput[l](3.495000,9.295000){\scalebox{1
-1}{$y(n)=\sum_{i=1}^Mx_i(n)$}} }\endpspicture 


we must change it to:
........
\newrgbcolor{dialinecolor}{0.000000 0.000000 0.000000}
\psset{linecolor=dialinecolor}
\rput[l](15.000000,-12.400000){\scalebox{1 -1}{$y^2_i(k)$}}
\setfont{Helvetica}{0.800000}
\newrgbcolor{dialinecolor}{0.000000 0.000000 0.000000}
\psset{linecolor=dialinecolor}
\rput[l](3.495000,-9.295000){\scalebox{1
-1}{$y(n)=\sum_{i=1}^Mx_i(n)$}} }\endpspicture