I'm trying to add two time's together and I keep getting error "type mismatch" here's the code:

MsgBox DateAdd("h", txtmondaymm, txtmondayma) where

txtmondaymm and txtmondayma are resultants of a DateDiff function

Any help would be appreciated

the second parameter must be a number specifying the amount of units specified by thr first parameter. For example

dateadd("d", 1, Now)

adds one day to the current time

Marco