# 3298 Adding Months to a DATE/TIMESTAMP Across Year Boundaries Causes Index/Range Check Error

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We are using ElevateDB (Assembly Version 2.3.5.0) in a .NET application with the ADO.Net provider. So far everything has worked great, but yesterday a customer reported a problem. I investigated and quickly found the cause: A statement contains a where condition which contains, among others lines the following expression:

V.MonatJahr>=(current_date() + (interval ''6'' month))

When I execute that statement directly in the ElevateDB manager, the statement runs fine. But when the statement is executed from within the program, an exception System.IndexOutOfRangeException occurs.