Generating array with arrayjob and store values for further analysis

In a two-dimensional array I want to store some calculated values. However, for example for a 2 on 2 matrix I get identical values for [1,2] and [2,1]. What am I am doing wrong?

documentclass[11pt]{scrartcl}
usepackage[utf8x]{inputenc}
usepackage{fp}                                 % fp-package
usepackage{forloop,arrayjobx}

begin{document}
newcommand{CreateArray}[2]{
FPevalmaxi{1+#1} FPevalmaxj{1+#2}
FPclipmaxi{maxi} FPclipmaxj{maxj} 
newcounter{i} newcounter{j}
newarrayMatrixA
expandarrayelementtrue

When I set up the matrix everything works fine:

forloop{i}{1}{thei < maxi}{                  % Rows
    forloop{j}{1}{thej < maxj}{              % Columns
        FPevalcalcvar{thej+100*thei}        % use variables i and j for calculation
        FPclipcalcvar{calcvar}
        MatrixA(thei,thej)={calcvar}        % save calcvar value in matrix     
        FPprint{thei} - FPprint{thej} - FPprint{calcvar} \
    }
}

But once I want to se the values stored the fields [2,1] and [1,2] are identical:

forloop{i}{1}{thei < maxi}{                  % Rows
    forloop{j}{1}{thej < maxj}{              % Columns
        thei - thej - MatrixA(thei,thej) \        
    }
}
}
CreateArray{2}{2}                                  % crete matrix
end{document}