[TYPO3-calendar] Event duration?

[Sebastian Reinhardt]

Hi

i'm, trying to get the event duration to show in the frontend.
I thougt of an own marker and then using prioriCalc = 1 to calclate the 
difference of the field:end and field:start. but in the frontend theres 
only the pure date listed, no calculation.


any ideas how i can place the event-duration in frontend?
e.g. : Event starts at 12:00 and ends at 13:00. Now i want to show 60min 
in the frontent using an own Marker.

thx
for help.

Sebastian