Thankyou for your prompt reply.
Yes the table field is a number - defined as long integer
unfortunately
Me.CoursePrice = DLookup("[CoursePrice]", "[tblintschedcourse]", "[InternalScheduledCourseID] = " & Forms![frmaddintbooking].[CourseTitle])
produced the same 2465 error
Help please.
I am using Access 2016 as part of Office 365 with a database in the accdb file format of 2007-2016.
On one form I can get dlookup to work but another I cannot. I know it is something to do with the variable types and the corresponding syntax i'm using, but I just cant find a...