Change JavaScript to Form Calc

[Steve_Colour]

Can someone can help change this to formcalc please and BIG thank you

if (tfProductCode.rawValue == "widgits" || tfProductCode.rawValue == "gizmos || ... )

     this.rawValue = this.parent.tfSize.rawValue * this.parent.tfQuantity.rawValue * this.parent.tfPrice.rawValue;

else this.rawValue = this.parent.tfQuantity.rawValue * this.parent.tfPrice.rawValue;