Adds single Poi instance update routine.
Adds single Poi instance update routine.

fraunhoferfokus/OCDB,fraunhoferfokus/OCDB,ricsirigu/OCDB,jjdblast/OCDB,ricsirigu/OCDB,fraunhoferfokus/OCDB,jjdblast/OCDB,jjdblast/OCDB,ricsirigu/OCDB