help me how to find max value in array

Dear Sir,
Please help me correct code stl as below: is wrong
MaxIntegersIndex:= 1; For i :=1 To 600 by 1 do if getarray( Array := array600, Index := i , arrayelement1) > getarray( Array := array600, Index := MaxIntegersIndex, arrayelement2) Then MaxIntegersIndex := i; end_if; MaxValOfIntArray := array600[MaxIntegersIndex]; End_For;