Method for operating a continuous processing line hereinafter referred to as CPL, the CPL comprising an annealing step for the production of continuously processed rolled steel strip the method comprising using a computer aided dynamic property predictive control model hereinafter referred to as DPPC comprising a material property model hereinafter referred to as MPM, which predicts a set of preliminary process settings hereinafter referred to as PPS with which the target mechanical, surface and geometry properties for a segment of strip can be obtained according to the MPM, and a dynamic process model, hereinafter referred to as DPM, which determines whether these PPS can be realised in the CPL, wherein the output of the MPM is used as input parameters for the DPM to enable the DPM to provide final process settings, hereinafter referred to as FPS for the CPL, wherein the input parameters for the MPM comprise: • the production schedule, which is the succession of strips that are to be produced, wherein each strip has its own set of properties such as strip dimensions, the chemical composition, the entry conditions and in-strip spatial inhomogeneities as created by the prior processes, the target mechanical, surface and geometry properties • target values for a segment of the incoming rolled strip for the mechanical, surface and/or geometry properties • one or more parameters of prior process conditions and/or predicted or measured mechanical, surface and/or geometry properties of said segment • optionally one or more elements of the chemical composition of said segment of the steel strip • optionally one or more microstructural parameters of said segment of the incoming rolled strip • optionally installation condition parameters • optionally feedback parameters from on-line property measurements of the incoming rolled strip • optionally feedback parameters from off-line property measurements and wherein the input parameters for the DPM comprise • the output of the MPM and one or more of: • installation condition parameters • one or more of the input parameters for the MPM • optionally feedback from on-line CPL process measurements to produce the FPS for the segment of the steel strip and wherein the FPS for the segment are fed into the computerised process automation of the CPL, whereby the segment of the steel strip is subsequently produced satisfying the target mechanical, surface and/or geometry properties. • the production schedule, which is the succession of strips that are to be produced, wherein each strip has its own set of properties such as strip dimensions, the chemical composition, the entry conditions and in-strip spatial inhomogeneities as created by the prior processes, the target mechanical, surface and geometry properties • target values for a segment of the incoming rolled strip for the mechanical, surface and/or geometry properties • one or more parameters of prior process conditions and/or predicted or measured mechanical, surface and/or geometry properties of said segment • optionally one or more elements of the chemical composition of said segment of the steel strip • optionally one or more microstructural parameters of said segment of the incoming rolled strip • optionally installation condition parameters • optionally feedback parameters from on-line property measurements of the incoming rolled strip • optionally feedback parameters from off-line property measurements and wherein the input parameters for the DPM comprise • the output of the MPM • installation condition parameters • one or more of the input parameters for the MPM • optionally feedback from on-line CPL process measurements to produce the FPS for the segment of the steel strip and wherein the FPS for the segment are fed into the computerised process automation of the CPL, whereby the segment of the steel strip is subsequently produced satisfying the target mechanical, surface and/or geometry properties.