WorksheetFunction.ImSum (Excel)
Returns the sum of two or more complex numbers in x + yi or x + yj text format.
Use the Complex method to convert real and imaginary coefficients into a complex number. The sum of two complex numbers is
ImSum (Arg1, Arg2, ..., Arg30)
Dim strImSum As String
strImSum = WorksheetFunction.ImSum(Arg1:=)