[Correlli]

You can only check for false or true if you set a bool: tag to a variable (which means you can only use 0 or 1 (but only as false or true) - binary compositions).

Like:

pawn Код:

new
    bool:myVariable;

stock myFunction(playerid)
{
  if(myVariable == true) return 1;
  else return 0;
}

But if you use it like this (your case):

pawn Код:

new
    myVariable;

stock myFunction(playerid)
{
  if(myVariable == true) return 1;
  else return 0;
}

You'll get the same warning (warning 213: tag mismatch) because your variable is just a normal variable.

Or like this:

pawn Код:

new
    bool:myVariable;

stock myFunction(playerid)
{
  if(myVariable == 1) return 1;
  else return 0;
}