Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
Even when he
himself after the first successes of the Roman army and fleet resolved
to yield and to accept the comparatively favourable terms of peace
proposed by Flamininus, "the people," that is to say the gang of
robbers whom Nabis had domiciled in Sparta, not without reason
apprehensive of a reckoning after the victory, and deceived by an
accompaniment of lies as to the nature of the terms of peace and as to
the advance of the Aetolians and Asiatics, rejected the peace offered
by the Roman general, so that the struggle began anew.
A battle took
place in front of the walls and an assault was made upon them; they
were already scaled by the Romans, when the setting on fire of the
captured streets compelled the assailants to retire.