Step value in Pascal programming

I want a programming code to print the odd numbers between a range to teach the students. Here I took the range as 1 to 10. So I want to print the odd numbers between 1 to 10.

I wrote this coding to print the odd numbers between 1 to 10

program printOdd1to10; {Prints odd numbers 1 - 10}

var counter : integer;
begin

   for counter := 1 to 10 do

      begin
        Writeln(counter); {prints new line}
        counter := counter + 2 {increment by value 2, like step 2}
      end;
        Readln;

end.

But when I run, it prints a long series of wrong answer. So, how to print like this pattern odd, even, times of 3(3,6,9...) numbers in pascal programming.

Following Jeff's answer, the best way to code your program is with 'while'.

i:= 1;  // start with an odd number
while i < 10 do
 begin
  writeln (i);
  i:= i + 2;  // or inc (i, 2)
 end;

Incrementing i by 2 each time will ensure that i is always odd, so there's no need to check this.