Ala. Code § 15-13-120: Substitution of Bail.

After a defendant has been released on either one of the four different types of bail, as set out in Division 2, Section 15-13-111, and the defendant desires to substitute one form of bail for another, the defendant may do so by giving such bail to the clerk of the court having jurisdiction of the case. The clerk shall approve the bail being substituted so long as it conforms with this chapter.