This is formula:
// --- settings
//length1=35 // "First Smoothing"
//length2=20 //"Second Smoothing"
//siglength=10 //"Signal Smoothing"
// --- end of settings
if barindex>1 then
i = (close/close[1])*100
sm1 = 2.0/length1
csf1=((i-100)-csf1[1])*sm1+csf1[1]
pmol2=csf1
sm2 = 2.0/length2
csf2=((10*pmol2)-csf2[1])*sm2+csf2[1]
pmol=csf2
pmols=average[siglength,1](pmol)
endif
return pmols coloured(100,100,100) as "Signal", pmol coloured(0,0,0) style(line,2) as "PMO", 0 coloured(100,100,100) style(dottedline) as "0 level"