A timer would be best. Just figure out how much time it takes using the speed its traveling at.
You can also use the distance its travelled, if you know what it will be.
Thing is, i can't use timer since the sprite can be at various distances... i would need it to be at certain point (or at least in range of 2-3 pixels from desired distance). Tried overlaping but thats also not quite what i need. Is there an aproximation expresion? Do this -> when sprite X distance is Player.X-5( 2-3 pixels plus or minus)