In the action the offense stated in the record of conviction must be alleged as a breach of the undertaking, and such record is conclusive evidence of the breach.

[(19-218) Cr. Prac. 1864, sec. 31, 9. 217; R.S., R.C., & C.L., sec. 7392; C.S., sec. 8642; I.C.A., sec. 19-218.]