Subtracting Hours from time field

[Guest]

How do I subtract 5 hours from a time field? It is in 24 hours format -

 

[Rick B]

DateAdd("n", -300,[MyTimeField])


or

DateAdd("h", -5,[MyTimeField])

 

[Guest]

Thank you! Sorry about posting twice - I got an error the first time saying
it didn't accept it..

Paige

DateAdd("n", -300,[MyTimeField])


or

DateAdd("h", -5,[MyTimeField])

How do I subtract 5 hours from a time field? It is in 24 hours format -