Solved AssignmentOperator issue

Okay, so I'm creating a team war game but I stumbled upon this issue and can't figure it out! :/

Code:

    String s;
    int i;
    label2811: for (Iterator localIterator1 = Manager.Arenas.iterator(); localIterator1.hasNext();
      i <= ((Integer)Manager.ArenaTeamRows.get(s + "Water")).intValue())

Error:
- Syntax error on token "<=", invalid
AssignmentOperator

Edit: Solved.

I've reset the format id of the arena and set onlineplayers to a string and then changed he iterator