macOS Error with initWithObjects

header file:

NSArray *arrSelections1;


.m file:

-(id) init
{
	
	if ([super init]) {
		arrSelections1 = [[NSArray alloc] initWithObjects: cse211djq, arc118djq, cse211clq, arc118clq, hubatlabclq, nrng514clq, wei408clq, tur2215clq, arcatlabbwq, b105110bwq, cse211bwq, hubatlabbwq, lawpclabbwq, lbw3radbwq, nrnatlabbwq, tur2215bwq, weiatlabbwq, nil];
			
	}
	return self;
}
-(void) dealloc
{

	[arrSelections1 release];
	
}


- (IBAction)selectall:(id)sender 
{
	for(NSButton *button1 in arrSelections1) [button1 setState:NSOnState];
	NSLog(@"%@", [arrSelections1 objectAtIndex: 5]);
}