Hi Joris,
Do you want the bar in the Gantt chart to turn red?
If so, you could use a Flag field (Flag1 for example) to test whether Actual
Work is greater than Baseline Work and set the Flag to "Yes". Then using the
Format>Barstyles command, create a new Gantt bar where the bar only displays
for Flag1 tasks.
See FAQ 31. "Customizing Task Bars - Project 2000" at:
http://www.mvps.org/project/faqs.htm
for some suggestions on working with custom fields. The FAQ references
Project 2000, but it works the same in later releases as well. You will want
to modify the formula referenced in the first paragraph to something like:
IIf([Actual Work]>[Baseline Work] Or [Actual Work]+[Remaining
Work]>[Baseline Work],1,0)
The formula above sets the Flag to yes if either actual work is greater than
baseline or the combination of actual and remaining work is greater than
baseline.
Hope this helps. Let us know how you get along.
Julie