RadzenGrid Incell Editing selecting a whole column

Greetings
Newbie to Blazor here
Im facing a InCell Editable DataGrid Problem where when I select one Cell the whole column takes gets in edit mode, what I need is to have only one cell selected

Image for reference:

Code:
string columnEditing;
List<KeyValuePair<string, string>> editedFields = new List<KeyValuePair<string, string>>();
List FicheirosMat = new List();

bool IsEditing(string columnName, FileModel file)
{
return columnEditing == columnName && FicheirosMat.Contains(file);
}
void OnCellClick(DataGridCellMouseEventArgs args)
{

        editedFields.Clear();
        var file = args.Data as FileModel;

        columnEditing = args.Column.Property;

        if (FicheirosMat.Any())
        {
            OnUpdateRow(FicheirosMat.First());
        }


    }

Maybe this demo will help you: