We find here all of the elements of an estoppel within the rule announced in Page v. Smith,
“It has often been held by this court that the plaintiff must prevail, if at all, upon the matters alleged in his complaint, and that he cannot set up one cause of action or suit in the complaint, and recover upon another and different ground of relief in a reply”: Union*415 Street Ry. Co. v. First National Bank,42 Or. 606 , 611 (72 Pac. 586 ,73 Pac. 341 ).
In applying the foregoing principle it has been held that in an action on a contract plaintiff must prove a right to prevail under the contract unless he alleges in his complaint a waiver on the part of the defendant of some of the provisions of the contract or an estoppel to assert them as a defense: Hannan v. Greenfield,
The contract on which plaintiff sues is an insurance policy in favor of A. Gr. Mercer. It provides that the policy shall be void if the interest of the insured be other than sole and unconditional ownership of the property covered. A. Gr. Mercer did not own this property. It is manifest, therefore, that plaintiff cannot recover on the contract as drawn and the complaint fails to allege an estoppel of the defendant to insist on its rights under the policy.
It follows that the court erred in receiving oral evidence which tended to modify the written contract sued on and the judgment must be reversed. If this testimony had been excluded because of the condition of the pleadings it is probable that plaintiff could have
Reversed and Remanded.
Motion to Retax Costs Denied.
