Dynamic helical polymers such as poly(phenylacetylene)s (PPAs) exhibit different asymmetry amplification effects, e.g., helix inversion or screw-sense induction, in the presence of different external stimuli such as temperature, solvents, or metal ions that usually operate independently through interaction with the pendant on the monomer repeating units (m.r.u.). In this work, we will demonstrate that the helical structure of a chiral PPA can be tamed by playing with two different external stimuli such as temperature and metal ions. Thus, when a metal ion salt is delivered to a chloroform solution of a chiral PPA to generate a chiral PPA (m.r.u.)/M