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//////////////// volumi.pos.e.neg.
volpos = 0
volneg
= 0 for n = m downto 1 if

close [n-1] => open [n-1] then
        volpos=volpos+volume[n-1]
    elsif close[n-1]
        volneg=volneg-volume[n-1]
    endif
next
return volpos coloured(0,255,0) as "VOLUMI POSITIVI", volneg coloured(255,0,0) AS "VOLUMI NEGATIVI",0 as"zero",tema[m](volpos+volneg)as " trigger"

////////////////sintonia volume prezzo
a=close/average[20](volume)
return * close to