Does Section 526a of the California Civil Code require a plaintiff to be a "citizen resident" of the state or a "taxpayer supporting the governmental entity"?

sue in this kind of case, for it clearly altered the common law, which required only that the plaintiff be a taxpayer supporting the governmental entity whose act is sought to be challenged" and did not impose a residency requirement. (Id . at p. 19, 51 Cal.Rptr. 881, 415 P.2d 769, citing Thomas v. Joplin (1910) 14 Cal.App. 662, 664-665, 112 P. 729.) Section 526a's requirement that an individual plaintiff be a "citizen resident therein," thus narrowed the scope of taxpayer standing relative to the common law.