A plaintiff sued a defendant for injuries allegedly suffered when he slipped and fell on the defendant's business property. At trial, without asking that the defendant's property manager be declared a hostile witness, the plaintiff called him solely to establish that the defendant was the owner of the property where the plaintiff fell. On cross-examination of the manager, the defendant's attorney sought to establish that the defendant had taken reasonable precautions to make the property safe for business invitees. Should the defendant's cross-examination of the manager be permitted over the plaintiff's objection?