Find method with receivedtime

Hi

I am trying to find emails based on a given receivedtime. I am currently using this..

filtertext = "[Receivedtime] = '" & Format(xreceivedtime, "ddddd hh:mm:dd") & "'"

Set oitem = ofolder.Items.Find(filtertext)

where xreceivedtime is the time of the email I'm looking for.

But that doesn't work. I suspect - but am not sure - it is do with how I format the receivedtime in the filtertext expression.

Thanks

Max