Decimal quantity is not working in order details

hi when i am ordering a product using wpc product quantity for woo-commerce plugin till check out page product quantity is working correctly in decimal value but when the order is complete the decimal value is converted to a whole number how can this problem be solved as suppose I If I select 1.5 quantity and complete the order then its quantity value becomes 1 order details I am facing this problem hope you all try to solve it