pgfplotstable: Crie linhas com loops

Question

É possível criar linhas com loops?

Pensei em algo assim:

\○pgfplotsinvokeforeach{1,...,5}{%
\pgfplotstableread[col sep=&]{
#1 & #1 & #1 
}\temp
\pgfplotstablevertcat{\main}{\temp}
}%
\pgfplotstabletypeset[]{\main}

Mas isso não funciona. O que devo fazer?

\documentclass[a4paper, landscape=false]{article}
\usepackage{pgfplotstable}
\pgfplotsset{compat=newest}

\begin{document}
% Start
\pgfplotstableread[col sep=&]{
999 & 999 & 999
}\main

\pgfplotstableread[col sep=&]{
1 & 1 & 1  
}\temp

Works:
\pgfplotstablevertcat{\main}{\temp}
\pgfplotstabletypeset[]{\main}

Works not:
%\pgfplotsinvokeforeach{1,...,5}{%
%\pgfplotstableread[col sep=&]{
%#1 & #1 & #1 
%}\temp
%\pgfplotstablevertcat{\main}{\temp}
%}%
%\pgfplotstabletypeset[]{\main}
\end{document}