CERN-LHC. Measurements of correlations between event-by-event fluctuations of amplitudes of anisotropic flow harmonics in nucleus-nucleus collisions at $\sqrt{s_{_{\rm NN}}}=2.76$ TeV, obtained for the first time using a new analysis method based on multiparticle cumulants in mixed harmonics, so-called Symmetric Cumulants (SC). Data was recorded in November 2010 with the ALICE detector at the CERN Large Hadron Collider. The measurements are performed in the central pseudorapidity region (|$η$|