Character values must be in quotes> HMODIFY SPECTRUM.DATA.TEMP 20000
Give specified slice of array the given values> HMODIFY DS.AXIS(1).UNITS 'Counts/s'
Replace the values of the first DATA_ARRAY with those in the second. They must be the same size> HMODIFY DS.DATA_ARRAY(1:5) [1 2 3 4 5]
> hmodify ds.data_array @ds2.data_array