Hi Pep, Thanks for the reply. Meanwhile, I found this explanation (through Google Groups search) to the strange index numbers: >David Berneda 23 Mar 1998 10:00 wrote: > >By default, Gantt series sort points by X values. >Disabling X sorting ( or calling AddGantt with X values sorted ) will >maintain...

When creating a bar in a Gantt diagram with e.g. AddGanttColor, the function returns a index value as, according to the help file, can be used to address the bar. When I create multiple bars on each line, the returned index value is re-used sometimes (have not figured out the pattern) and is therefo...