Gantt chart duration formatting question

[WDC]

I am trying to change the duration time for a task in a Gantt chart. I read in the help file that you can enter in the duration you want, for example 1h for 1 hour. When I do this, the program, for some reason, reformats the 1h to .88h.

I want to have something like the following:
task Start date End date Duration
name 7/8/2004 7/8/2004 1h
name 7/8/2004 7/8/2004 2h
name 7/8/2004 7/8/2004 1h
name 7/8/2004 7/8/2004 2h

Again, when I enter the 1h or 2h, VISIO reformats them to .88h for 1h and 1.77h for 2h.

Can anyone explain why this is and how to change this so it reflects the whole hour number for the duration?

I tried setting the duration format to hours and days hours inthe Options menu, but this is no help.

Thanks.
WDC