Column Expression node

Hi Team,

As I am new to knime I am facing an error while using IF Else condition with AND and OR logical operators.

Please correct the code

IF [PO Price per PC]>=(([Std Cost per DZ]/12)-1)

AND column([PO Price per PC])<=(([Std Cost per DZ]/12)+1)

OR isMissing([Std Cost per DZ])

THEN “Current Qtr”

//Elseif [PO Price per PC]>=(([Std Cost per DZ]/12)-1)

//AND [PO Price per PC]<=(([Std Cost per DZ]/12)+1)

//then “Previous Qtr”

//ELSE “Current Qtr”

ELSE “”

ENDIF

Thanks,

Subash