The following is generating error saying UNDEFINED 'MA'. Need help

Algos, strategies, code
1

SET HC = (OPEN+HIGH+LOW+CLOSE)/4
SET HO = (REF(OPEN,1) + REF(CLOSE,1))/2
SET HH = MAXOF(HIGH, MAXOF(HC, HO))
SET HW = MINOF(LOW, HO, HC)

SET C = (SMA(HH,16)+SMA(HW,16))/2
SET D = (SMA(HH,36)+SMA(HW,36))/2

SET KT= (HH+HW+HC)/3
SET KP=(REF(HH,1)+REF(HW,1)+REF(HC,1))/3
SET T= IF(KT>KP,1,-1)
SET KVO= EMA(HC,28)TVOLUME-EMA(HC,36)TVOLUME
SET KVOS=EMA(HC,28)

HC>C AND HC>D AND KVO>KVOS

2

The above syntax is correct But, not properly closed the braces and spaces

check the below corrected script and its working

SET HC = (OPEN+HIGH+LOW+CLOSE)/4
SET HO = (REF(OPEN,1) + REF(CLOSE,1))/2
SET HH = MAXOF(HIGH, MAXOF(HC, HO))
SET HW = MINOF(LOW, HO, HC)

SET C = (SMA(HH,16)+SMA(HW,16))/2
SET D = (SMA(HH,36)+SMA(HW,36))/2

SET KT = (HH+HW+HC)/3
SET KP = (REF(HH,1)+REF(HW,1)+REF(HC,1)) / 3
SET T= IF(KT>KP,1,-1)
SET KVO = EMA(HC,28)*T*VOLUME-(EMA(HC,36)*T*VOLUME)
SET KVOS = EMA(HC,28)

HC>C AND HC>D AND KVO>KVOS