Circular reference

I’m trying to code a screener for demand and supply levels. I have successfully made indicators and I now want to screen markets.

I have made two functions that I call and each of them works separately in separate screeners. However. When I try to merge these two screeners into one I get a circular reference.

I have attached the code that works. But as soon as I uncomment the code underneath it gives me circular reference. I can’t figure out why.

MaxCandleIterations = 200
CurrentCandleIndex = 1
ValueToReturn = -1

WHILE CurrentCandleIndex < MaxCandleIterations

// Check for demand.
IF (OPEN > CLOSE) THEN

Demand, DemandBottom, DemandTop = CALL "Demand zone"[CurrentCandleIndex]

// Buy signal here.
IF (Demand = 1 AND LOW < DemandTop AND LOW > DemandBottom) THEN

ValueToReturn = 1
BREAK
ENDIF

// Check for supply.
ELSE

Supply, SupplyBottom, SupplyTop = CALL "Supply zone"[CurrentCandleIndex]

// Sell signal here.
IF (Supply = 1 AND HIGH > SupplyBottom AND HIGH < SupplyTop) THEN

ValueToReturn = 0
BREAK
ENDIF

//IF (Supply = 0 AND HIGH > SupplyBottom AND HIGH < SupplyTop) THEN

// Just iterate one more candle to make sure demand isn't hiding behind.
//Supply, SupplyBottom, SupplyTop = CALL "Supply zone"[CurrentCandleIndex + 1]

//IF (Supply = 0) THEN
//BREAK
//ENDIF
//ENDIF
ENDIF

CurrentCandleIndex = CurrentCandleIndex + 1
WEND


IF (ValueToReturn > -1) THEN
SCREENER (ValueToReturn AS "Zone")
ENDIF