There was no demurrer to the cross-petition, no motion to strike it, and no charge in reference to it attacked. The only way its legal sufficiency is challenged is by motion for new trial. This method is not appropriate.
Kelly
v.
Strouse,
116
Ga.
872 (5a), 883 (
The further point is made that the note was not a proper subject-matter of set-off, because the defendants did not have legal title to it at the time suit was instituted, but acquired such title pending the action. “Between the parties themselves any mutual demands, existing at the time of the commencement of the suit, may be set off.” Code, § 20-1302. “A plea of set-off is not good unless it alleges facts showing that the demand against the plaintiff which the defendant therein seeks to set up was in existence and due to the latter by the former'at the time his action was begun.”
Walters
v.
Eaves,
105
Ga.
584 (3) (
The next claim of error rests upon the contention that to allow the judgment against the administratrix “would be to grant a preference to the defendant over other creditors or persons holding claims against the estate of Eobert Nixon.” The Code, § 81-802, declares: “When a defendant pleads a set-off of a larger amount than the demand of the testator or intestate, the plaintiff may reply by showing that the estate is insolvent, and that there are outstanding debts, of higher dignity than the defendant’s set-off, sufficient to exhaust the assets, for the purpose of protecting the executor or administrator from an absolute judgment.” The provisions of this section were applied in
Bass
v.
Gobert,
113
Ga.
262 (3) (
