§ 7. Enforceable Lien Certificate.

The amount on the validity of any liens or certificates of indebtedness provided for in this Act shall not be questioned in any direct or in any collateral proceeding instituted more than six months after the issuing of such certificates. In any suit brought to enforce such lien or the collection of the amount due upon any certificate of indebtedness, the original certificate shall be and constitute prima facie evidence of the amount and the existence of the lien upon the property described in such certificate and shall not be set aside or held invalid except on clear and satisfactory evidence. In all cases mentioned in this Act where the City has acquired or may hereafter acquire liens for improvements such liens shall be enforced by a bill in chancery brought by the City or in the name of the City by the holder thereof. The bill shall set forth briefly the issuing of a certificate, the amount thereof and the description of the property contained therein and shall pray that the said real estate described shall be sold to satisfy the lien, and in the decree or judgment shall be included a reasonable attorney's fee not exceeding twenty-five dollars for the institution of the said suit, and the additional sum of proceedings, which attorney's fee shall be fixed by the court, but in no event shall the City be liable for the payment of such attorney's fee.

(Laws of Fla. ch. 7210(1915), § 4)