  The effect of isoscalar S-wave multichannel pi pi -> pi pi, K antiK, eta eta
scattering is considered in the analysis of decay data of the Upsilon-mesons.
We show that when allowing for the final state interaction contribution to the
decays Upsilon(mS) -> Upsilon(nS) pi pi (m>n, m=2,3, n=1,2) in our
model-independent approach, we can explain the two-pion energetic spectra of
these Upsilon transitions including the two-humped shape of the di-pion mass
distribution in Upsilon(3S) -> Upsilon(1S) pi pi as the coupled-channel effect.
It is shown also that the considered bottomia decay data do not offer new
insights into the nature of the f0 mesons, which were not already deduced in
our previous analyses of pseudoscalar meson scattering data.
