Hello, I need to understand the SubReport integration in a report on Jasper Studio. Is it still necessary to create a parameter in the subreport and then add it to the parent report? In my case I do not know which parameter to pass. In the father report, I make this request to retrieve the orders table by selected period: SELECT entreprisejasperreports.commandes.`Id_commande`, DATE_FORMAT(entreprisejasperreports.commandes.`DateCommande`, GET_FORMAT(DATE, 'EUR')) AS 'Date commande', entreprisejasperreports.commandes.`Produit`, entreprisejasperreports.commandes.`Prix`, entreprisejasperreports.commandes.`Id_client`FROM entreprisejasperreports.commandes WHERE DATE(entreprisejasperreports.commandes.`DateCommande`) BETWEEN $P{Date1} AND $P{Date2}[/code]Here is the screen of the subreport with the request below, I get all the orders (total of sales) of my base by year and by products: https://www.developpez.net/forums/attachments/p349430d1518046279/logiciels/solutions-d-entreprise/business-intelligence/jasper/integration-subreport-rapport-pere/titre.png/ And this is code SQL of this screen : SELECT Produit, SUM(Prix) 'Ventes par produit', YEAR(entreprisejasperreports.commandes.`DateCommande`) AS 'Date commande' FROM commandes GROUP BY entreprisejasperreports.commandes.`Produit`[/code]Thank you for your help