# 1549 Specifying Parameters on Left-Hand Side of Binary Operators Causes Type Mismatch in Filters and SQL

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I have the following parametrized SQL (all works fine in v 3). Before calling ExecSQL I go through the list of parameters and
assign values. For some reason ParamCount = 2, although both parameters have the same 'OrderID'. I assign them integer 1.
I traced it, so I'm sure, that their types are both ftInteger and so is the type of OrderID field in Orders table. When I try to call ExecSQL, it gives me the following error:

11949 Type mismatch between NOT IN operator and expression 'select' in WHERE or 'JOIN' clause.