[alexus]

Try this:

Код:

	new String[128];
	String = strtok(params, idx);
	if (!strlen(String)) return SendClientMessage(playerid, COLOR_GRAD2, "[USAGE]: /gotopos x y z");
	new Float:X, Float:Y, Float:Z;
	X = floatstr(String);
	Y = floatstr(strtok(params,idx));
	Z = floatstr(strtok(params,idx));
        SetPlayerPos(playerid, x, y, z);

The second error is because the variable is not defined. Do it at the beginning of the script. It seems to be a boolean.