adding time to a date

[Quoted] In Forms6, I'm having to field on screen: first one is end_time (date in format DD/MM/YYYY HH24:MI') second is supl_time (date in format HH24:MI) I must add the supl_time to the end_time, so I'm doing :end_time := :end_time + :supl_time
But the result of that operation is 'error 306: wrong number or types of arguments in call to '+'
How to proceed to add supl_time to end_time?

-- 
Luc Bosman
[Quoted] DEV/2000 Software Engineer
Database & Network Administrator
l.bosman_at_wanadoo.be                      ICQ 37011625
http://users.skynet.be/kobukai/


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