%this is the way to redefine styles
% \newpsstyle{mytickstyle}{linewidth=1pt,linecolor=blue}

\renewcommand{\betweenticks}{200}
\bardiagrambegin{9.5}{1000}{2cm}{1}{2}{1cm}{0.01cm}
    \drawlevellines
    \renewcommand{\placenumber}{\overtop}
    \newpsstyle{fillukr}{linestyle=solid,hatchsep=4pt,fillstyle=vlines*}
    \newpsstyle{fillrus}{linestyle=solid,hatchsep=8pt,fillstyle=crosshatch*}
    \newpsstyle{filloth}{linestyle=solid,hatchsep=8pt,fillstyle=hlines*}
    \baritem[style=fillukr]{Kiev}{421}{gray}
    \baritem[style=fillukr]{Odessa}{712}{lightgray}
    \baritem[style=fillrus]{Moscow}{510}{gray}
    \baritem[style=fillrus]{Bryansk}{310}{lightgray}
    \baritem[style=filloth]{New-York}{542}{lightgray}  
    %
    % we can call
    %  \diagLegendoptions{yellow}{red}{0.5pt}
    % to produce a legend with yellow background with red frame
    % with linewidth=0.5pt
    %
    \diagLegendbegin{5.6}{980}{4.5}
      \diagLegenditem{during 6 months}{gray}
      \diagLegenditem{during a year}{lightgray}
      \diagLegenditem[style=fillukr]{Ukrainian cities}{white}
      \diagLegenditem[style=fillrus]{Russian cities}{white}
      \diagLegenditem[style=filloth]{other cities}{white}
    \diagLegendend
\bardiagramend{}{\large Stars Fallen}