Using wave reference waves in multithread statements

threadsafe Function/WAVE MapWaveRefWave(input, row)
    WAVE/WAVE input
    variable row
 
    return input[row]
End
 
Function DoStuff()
 
    Make/FREE/WAVE/N=2 refWave
    
    Make/FREE/N=(128) data1 = 100 + p
    Make/FREE/N=(128) data2 = 200 + p
    
    refWave[0] = data1
    refWave[1] = data2
 
    Make/FREE/N=(128) output
 
    Multithread output[][] = MapWaveRefWave(refWave, 0)[p] + MapWaveRefWave(refWave, 1)[p]
    print output
End