diff --git a/examples/customsortfiltermodel/main.go b/examples/customsortfiltermodel/main.go
index f8861d0a..ca038f2c 100644
--- a/examples/customsortfiltermodel/main.go
+++ b/examples/customsortfiltermodel/main.go
@@ -28,6 +28,10 @@ func PopulateData(rootItem *TreeItem) {
 	if err != nil {
 		fmt.Printf("Error setting UserData: %v\n", err)
 	}
+	err = item.SetData(0, qt.NewQVariant11("Big File"), qt.UserRole)
+	if err != nil {
+		fmt.Printf("Error setting UserData: %v\n", err)
+	}
 	rootItem.AppendChild(&item)
 
 	cellData2 := make([]*TreeCell, 0)
@@ -38,6 +42,10 @@ func PopulateData(rootItem *TreeItem) {
 	if err != nil {
 		fmt.Printf("Error setting UserData: %v\n", err)
 	}
+	err = item.SetData(0, qt.NewQVariant11("Small File"), qt.UserRole)
+	if err != nil {
+		fmt.Printf("Error setting UserData: %v\n", err)
+	}
 	rootItem.AppendChild(&item2)
 
 	cellData3 := make([]*TreeCell, 0)
@@ -48,6 +56,10 @@ func PopulateData(rootItem *TreeItem) {
 	if err != nil {
 		fmt.Printf("Error setting UserData: %v\n", err)
 	}
+	err = item.SetData(0, qt.NewQVariant11("Medium File"), qt.UserRole)
+	if err != nil {
+		fmt.Printf("Error setting UserData: %v\n", err)
+	}
 	rootItem.AppendChild(&item3)
 }
 
diff --git a/examples/customsortfiltermodel/tree_cell.go b/examples/customsortfiltermodel/tree_cell.go
index a2fee3dc..3635c16e 100644
--- a/examples/customsortfiltermodel/tree_cell.go
+++ b/examples/customsortfiltermodel/tree_cell.go
@@ -22,12 +22,12 @@ func (cell *TreeCell) SetData(data qt.QVariant, role qt.ItemDataRole) {
 
 func (cell *TreeCell) Data(role qt.ItemDataRole) *qt.QVariant {
 	if role == qt.UserRole {
-		number, err := strconv.Atoi(cell.data[role])
+		number, err := strconv.ParseInt(cell.data[role], 10, 64)
 		if err != nil {
 			fmt.Printf("Error converting %s to int: %v\n", number, err)
 			return qt.NewQVariant11(cell.data[role])
 		}
-		return qt.NewQVariant4(number)
+		return qt.NewQVariant6(number)
 	}
 	return qt.NewQVariant11(cell.data[role])
 }