[dice7]

pawn Код:

format(string, sizeof(string), "481,%f,%f,%f,0.0,0,0,%s,BMX,20000,,1,0", x, y, z, sendername);

since x, y and z are floats.

And you don't need to use Float in functions, just when declaring the variables

pawn Код:

new Float:x, Float:y, Float:z;
GetPlayerPos(playerid, x, y, z);

This will also work