The present invention aims to produce a cold rolled metal coated multi-phase steel, characterized by a tensile strength of at least 500 MPa, a yield ratio lower than 0. The invention also concerns a deoxyribonucleic acid sequence coding for said polypeptide and the uses of said deoxyribonucleic sequence. The IVR system times target IVR system messages, and converts the times into pauses for the IVR dialer. The speed of the simulation is also improved by performing some operations outside the solver calculation loop and by using specialized data structures.