Attempting Enumerated Math Functions

dim as function( as string, as string ) as long fnMath( ... ) = { _
        @Spark_Math__Basic__Add, _
        @Spark_Math__Basic__Subtract, _
        @Spark_Math__Basic__Multiply, _
        @Spark_Math__Basic__Divide, _
        @Spark_Math__Modular__Modulo, _
        @Spark_Math__Exponential__Growth, _
        @Spark_Math__Exponential__Decay, _
        @Spark_Math__Binary__Shift_Right, _
        @Spark_Math__Binary__Shift_Left, _
        @Spark_Math__Bitwise__And, _
        @Spark_Math__Bitwise__Or, _
        @Spark_Math__Bitwise__Xor, _
        @Spark_Math__Boolean__And, _
        @Spark_Math__Boolean__Or, _
        @Spark_Math__Boolean__Xor, _
        @Spark_Math__Relational__Equal_To, _
        @Spark_Math__Relational__Lesser_Than, _
        @Spark_Math__Relational__Greater_Than, _
        @Spark_Math__Relational__Lesser_Or_Equal_To, _
        @Spark_Math__Relational__Greater_Or_Equal_To, _
        @Spark_Math__Relational__Not_Equal_To _
    }