Hi, I’ve written my first Indicator and am trying to call it from my trading System. The problem I have is that when I call the function from a Trading System, no data is returned.

The indicator returns a single value (in a parameter called Result) of either 1, 2 or 99 and seems to work fine when added to a chart.

The Trading System output shows a value of 0 which suggests something is wrong somewhere but I can’t seem to work it out.

Any help would be gratefully received 🙂

I’ve attached

a) the indicator code

b) my simple trading system which calls the indicator

c) a screen shot which shows the indicator on the chart. This shows that there are values in the Result parameter which the indicator returns. It also shows the Trading System variables which should show the Result value however it remains at a value of 0.

DEFPARAM cumulateorders=true
myResult=CALL myClearBar
Graph myResult

if myResult=1  Then
   BUY 1 CONTRACTS AT MARKET
ENDIF

If myResult=2 THEN
    SELL AT MARKET
ENDIF

DEFPARAM CALCULATEONLASTBARS = 200
DEFPARAM DRAWONLASTBARONLY = false
x=200 // number of bars to look back through...
LH=99999999
HL=0

LHFound=0 // flag to indicate whether the Lowest High has been found; and the routine should now look for the Highest Low
HLFound=0 // opposite of above...

// keep looping through the specified number of bars so we know which is the nearest LH or HL
while x>1 do
//--------------------------------------------------------------------------------------
// Reset flags
result=99
//thisBarIndex=0

//--------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------
// look for the most recent Lowest High bar LH)
while high[x] < LH and x>0 DO // look for a new lowest high; skip when x=0
LH=high[x] // set the latest LH
x=x-1 // decrement the loop
LHFound=1 // indicate that aLH has been found
HLFound=0 // ...and that the HL has not....
wend

//--------------------------------------------------------------------------------------
//  Output LH bar
if LHFound then
//Draw where the LH was found...
x=x+1
//ThisBarIndex=Barindex
DRAWTEXT("LH*", barindex-x, high[x])
x=x-1
//LatestLH=LH
//LatestHL=0
Endif
//--------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------
// look for the most recent Highest Low bar (HL)
WHILE low[x] >HL and x>0 DO// look for a new highest low; skip when x=0
HL=low[x]// set the latest HL
x=x-1 // decrement the loop
HLFound=1 // indicate that a HL has been found
LHFound=0 // ...and that the LH has not....
WEND

//--------------------------------------------------------------------------------------
//  Output HL bar
if HLFound then
// Draw where the HL was found...
x=x+1
//LatestHL=HL
//LatestLH=0
//ThisBarIndex=Barindex
DRAWTEXT("HL", barindex-x, low[x])
x=x-1
Endif
//--------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------
// Output signal bar on chart
if close>LH and close[1]<=LH then
result=1
DRAWARROWUP(barindex, low)coloured(0,255,0)
x=1// exit loop
endif

if close<HL and close[1]>=HL then
result=2
DRAWARROWDOWN(barindex, high)coloured(255,0,0)
x=1// exit loop
endif
//--------------------------------------------------------------------------------------
// reset these counters before re-loooping...
LH=99999999
HL=0
wend
return result as "Result"//, LatestHL as "HL",LatestLH as "LH", close as "Close"
//, ThisBarIndex as "ThisBarIndex",barindex as "Barindex"

myClearBar-screen.png