Hi @Ranjith Kumar Govindharaj 

Let use this JS below to call your client action when a cell click event triggered.

1. let myGrid = OutSystems.GridAPI.GridManager.GetGridById("MyGrid").provider;
2. myGrid.hostElement.addEventListener('click', function(e) {
3.     var ht = myGrid.hitTest(e);
4.     if (ht.cellType == wijmo.grid.CellType.Cell) {
5.         var rowIndex = ht.row;
6.         var colIndex = ht.col;
7.         console.log('rowIndex = ',rowIndex);
8.         console.log('colIndex = ',colIndex);
9.         // If (colIndex === 2) { // Call your client action }
10.     }
11. });

The result:

@Ranjith Kumar Govindharaj
The code below will works:

1. let myGrid = OutSystems.GridAPI.GridManager.GetGridById("MyGrid").provider;
2. myGrid.hostElement.addEventListener('click', function(e) {
3.     var ht = myGrid.hitTest(e);
4.     if (e.target.tagName === 'A') {
5.         // Stop event propagation so it doesn't trigger the cell click event
6.         e.stopPropagation();
7.         return;
8.     }
9.     if (ht.cellType == wijmo.grid.CellType.Cell) {
10.         var rowIndex = ht.row;
11.         var colIndex = ht.col;
12.         console.log('rowIndex = ',rowIndex);
13.         console.log('colIndex = ',colIndex);
14.         // If (colIndex === 2) { // Call your client action }
15.     }
16. });