if (key == X_ATOM) {
current = current.setx(value.asInt(),
type == Type.DOUBLE_TYPE ? EDOUBLE_TYPE : type,
FV.this);
} else if (key == Y_ATOM) {
current = current.sety(value.asInt(),
type == Type.DOUBLE_TYPE ? EDOUBLE_TYPE : type);
} else if (key == FR_ATOM) {
current = current.setf(value.asInt(), type);
} else {
throw new Error("unknown " + dst);