Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Wave length
SLA_WAVE_PARAMS_LENGTH
Parameter: Speed
SLA_WAVE_PARAMS_SPEED
Parameter: Amplitude
SLA_WAVE_AMPLITUDE
Parameter: Falloff
SLA_WAVE_FALLOFF
Parameter: Minimal Strength
SLA_WAVE_PARAMS_MIN_STRENGTH
Parameter: Periods
SLA_WAVE_PERIODS
Parameter: Particle Dependent
SLA_WAVE_PARAMS_SPEED_PARTICLE_DEPENDENT
Parameter: Object
SLA_WAVE_PARAMS_OBJECT
Parameter: Particles
SLA_WAVE_PARTICLE