On click of row how to dynamically add subrows in SKSTableview

[sakshigidwani93]

In didSelectRowAtIndexPath, i want to dynamically subrows but this code is not working.

This is my array _arr_Alphabets = [[NSMutableArray alloc] initWithObjects: @[ @[@"A",@"A1",@"A2"], @[@"B", @"B1",@"B2"], @[@"C", @"C1",@"C2"], ], nil]; trying to insert object a3 after a2 [[[_arr_Alphabets objectAtIndex:0] objectAtIndex:0] insertObject:@"A3" atIndex:3];

error unrecognized selector sent to instance