Md. Code, Real Property § 14–310

(a) This law is remedial and shall be so construed to give effect to its purpose.

(b) (1) Any amendment shall be made in the proceedings, commencing with the claim or broker’s lien to be filed and extending to all subsequent proceedings, as may be necessary or proper.

(2) The amount of the claim or broker’s lien filed may not be enlarged by amendment.