fungsi delete

del: function (index) {
        console.log(this.stockIn.ItemCollection[index])
        this.stockIn.Total = parseInt(this.stockIn.Total) - parseInt(
            ((parseInt(this.stockIn.ItemCollection[index].BundleQuantity100) * parseInt(this.stockIn.ItemCollection[index].Price100))) +
            ((parseInt(this.stockIn.ItemCollection[index].BundleQuantity90) * parseInt(this.stockIn.ItemCollection[index].Price90))) +
            ((parseInt(this.stockIn.ItemCollection[index].BundleQuantity60) * parseInt(this.stockIn.ItemCollection[index].Price60)))
        )
        this.stockIn.ItemQuantity = parseInt(this.stockIn.ItemQuantity) - parseInt(this.stockIn.ItemCollection[index].BundleItemQuantity)
        this.$delete(this.stockIn.ItemCollection, index)
    },