single selection

src/components/ProjectCashFlow/ProjectCashFlow.tsx

@@ -72,11 +72,17 @@ const ProjectCashFlow: React.FC = () => {
   );
 
   const handleSelectionChange = (newSelectionModel: GridRowSelectionModel) => {
-    
+    var selection: GridRowSelectionModel = []
     if (!isInitializing) {
-      setSelectionModel(newSelectionModel);
+      if (newSelectionModel.length > 1) {
+        selection = [newSelectionModel[1]]
+        setSelectionModel(selection)
+      } else {
+        selection = newSelectionModel 
+        setSelectionModel(newSelectionModel);
+      }
       const selectedRowsData = projectData.filter((row: any) =>
-        newSelectionModel.includes(row.id)
+        selection.includes(row.id)
       );
       const projectIdList = selectedRowsData.map((row: any) => row.id);
       setSelectedProjectIdList(projectIdList);