Seems solved, the important part in red. The result is attached.
<?lsmb BLOCK multiline -?>
\begin{minipage}{12cm}
\medskip
\raggedright
<?lsmb string ?>
\end{minipage}
<?lsmb- END -?>
.....
& \multicolumn{5}{l}{<?lsmb INCLUDE multiline string = serialnumber.${lc} ?>}
Attachment:
Kijelölés_130.png
Description: PNG image
