VBA not translating FormulaR1C1 index

So everytime i try to use a VBA code like this to insert an index function: 

Range("K2").Select
ActiveCell.FormulaR1C1 = _
        "=INDEX(RC[-1],MATCH(RC[-1],RC[-1],0))"

in K2 it gives back something like:

=@Index(J2;CORRESP(J2;J2;0))

I assume there would be not much of a problem, but i use the pt-br version of excel, so it doesnt translate the index part to the pt-br formula name, i have tried using Formula2, but it only takes out the @ and if i use something like 

ActiveCell.FormulaR1C1 = _
        "=índice(RC[-1],match(RC[-1],RC[-1],0))"

the formula only works if i press F2 + enter on it afterwards.