What are the conditions?

Hello, if what you are looking for is an oscillator making decreasing minimums, you could store the maximum value reached by the oscillator each time it is positive and then draw a line that joins the maximums. If the line has a negative slope then we look for those values that are crossing upwards today.

AO=Average[5](MedianPrice)-Average[34](MedianPrice)

if AO > 0 then
n=n+1
aohigh = highest[n](AO)
elsif AO crosses under 0 then
$aohighprev[t+1]=aohigh[1]
$aohighprevx[t+1]=barindex-barssince(ao=aohigh)
t=1+t
else
n=0
endif

//(x-x1)/(x2-x1) = (y-y1)/(y2-y1)
y1 = $aohighprev[max(0,t-1)]
x1 = $aohighprevx[max(0,t-1)]
y2 = $aohighprev[t]
x2 = $aohighprevx[t]

yy = y1+(barindex-x1)*(y2-y1)/(x2-x1)

if y1 > y2 and ao[0] > yy and ao[1] < yy then
res = 1
else
res = 0
endif

screener[res=1]

Casi

AO=Average[5](MedianPrice)-Average[34](MedianPrice)

if AO < 0 then
n=n+1
aoLOW = LOWest[n](AO)
elsif AO crosses OVer 0 then
$aoLOWprev[t+1]=aoLOW[1]
$aoLOWprevx[t+1]=barindex-barssince(ao=aoLOW)
t=1+t
else
n=0
endif

//(x-x1)/(x2-x1) = (y-y1)/(y2-y1)
y1 = $aoLOWprev[max(0,t-1)]
x1 = $aoLOWprevx[max(0,t-1)]
y2 = $aoLOWprev[t]
x2 = $aoLOWprevx[t]

yy = y1+(barindex-x1)*(y2-y1)/(x2-x1)

if y1 < y2 and ao[0] < yy and ao[1] > yy then
//res = 1
DRAWARROWdown(barindex, ao)COLOURED("RED")
drawsegment(x1,y1,barindex,yy)
//else
//res = 0
endif

RETURN aolow coloured("red")style(dottedline,2), ao, $aolowprev[t] coloured("blue"), 0 style(dottedline,1)